Master Disease: Sleep deprivation Anemia Depression Hypothyroidism Chronic fatigue syndrome Diabetes Dehydration Nutrient deficiencies Sleep apnea Chronic kidney disease Tension headache Migraine Cluster headache Sinusitis Dehydration Caffeine withdrawal Eye strain Hypertension Medication overuse headache Temporomandibular joint dysfunction (TMJ) Muscle strain or overuse Dehydration Fibromyalgia Influenza (flu) Delayed onset muscle soreness (DOMS) Vitamin D deficiency Chronic fatigue syndrome Electrolyte imbalances Rheumatoid arthritis Myositis Osteoarthritis Rheumatoid arthritis Gout Bursitis Tendinitis Lupus Lyme disease Fibromyalgia Sprains and strains Septic arthritis Viral infection (e.g., influenza, common cold) Bacterial infection (e.g., strep throat, urinary tract infection) COVID-19 Malaria Gastroenteritis Pneumonia Tonsillitis Appendicitis Sinusitis Cellulitis Fever Influenza Pneumonia Malaria Gastroenteritis COVID-19 Pyelonephritis (kidney infection) Meningitis Sepsis Hypothermia Gastroenteritis Pregnancy (morning sickness) Food poisoning Migraine Motion sickness Vertigo Gallstones Gastroesophageal reflux disease (GERD) Anxiety Medication side effects Gastroenteritis Food poisoning Pregnancy (morning sickness) Migraine Alcohol intoxication or hangover Motion sickness Appendicitis Gallstones Kidney stones Overeating Gastroenteritis Food poisoning Irritable bowel syndrome (IBS) Lactose intolerance Medication side effects Celiac disease Crohn's disease Ulcerative colitis Traveler's diarrhea Giardiasis Dehydration Lack of dietary fiber Sedentary lifestyle Medication side effects Irritable bowel syndrome (IBS) Hypothyroidism Pregnancy Diabetes Colon cancer Obstruction (e.g., fecal impaction, tumor) Gastroenteritis Irritable bowel syndrome (IBS) Constipation Indigestion Appendicitis Menstrual cramps Kidney stones Gallstones Peptic ulcer Pancreatitis Overeating Irritable bowel syndrome (IBS) Constipation Lactose intolerance Gastroesophageal reflux disease (GERD) Celiac disease Food allergies or intolerances Menstrual cycle Gas-producing foods Small intestinal bacterial overgrowth (SIBO) Swallowing air Carbonated beverages Overeating Gas-producing foods Lactose intolerance Irritable bowel syndrome (IBS) Constipation Gastroesophageal reflux disease (GERD) Celiac disease Small intestinal bacterial overgrowth (SIBO) Gastroesophageal reflux disease (GERD) Overeating Obesity Pregnancy Hiatal hernia Certain medications (e.g., NSAIDs, calcium channel blockers) Alcohol consumption Smoking Spicy or fatty foods Lying down soon after eating Overeating Gastroesophageal reflux disease (GERD) Peptic ulcer Gastritis Lactose intolerance Food allergies or intolerances Gallstones Pancreatitis Stress and anxiety Certain medications (e.g., NSAIDs, antibiotics) Illness or infection (e.g., cold, flu, gastroenteritis) Depression Anxiety Stress Gastroesophageal reflux disease (GERD) Medication side effects Cancer Kidney or liver disease Anorexia nervosa Chronic obstructive pulmonary disease (COPD) Reduced calorie intake Increased physical activity Hyperthyroidism Diabetes Cancer Malabsorption disorders (e.g., celiac disease, Crohn's disease) Depression Chronic obstructive pulmonary disease (COPD) Chronic kidney disease HIV/AIDS Increased calorie intake Sedentary lifestyle Hypothyroidism Polycystic ovary syndrome (PCOS) Medication side effects (e.g., corticosteroids, antidepressants) Fluid retention (e.g., congestive heart failure, kidney disease) Depression Pregnancy Menopause Cushing's syndrome Common cold Influenza Bronchitis Pneumonia Asthma Gastroesophageal reflux disease (GERD) Chronic obstructive pulmonary disease (COPD) Allergies Postnasal drip Sinusitis Viral pharyngitis (e.g., common cold, flu) Bacterial pharyngitis (e.g., strep throat) Allergies Postnasal drip Gastroesophageal reflux disease (GERD) Tonsillitis Mononucleosis Smoking Environmental irritants (e.g., pollution, chemicals) Dry air Common cold Allergic rhinitis (hay fever) Sinusitis Nonallergic rhinitis (e.g., vasomotor rhinitis) Influenza Nasal polyps Deviated septum Environmental irritants (e.g., pollution, smoke) Pregnancy Dry air Common cold Allergic rhinitis (hay fever) Sinusitis Influenza Nonallergic rhinitis (e.g., vasomotor rhinitis) Nasal polyps Cold weather Environmental irritants (e.g., pollution, smoke) Crying Spicy foods Allergic rhinitis (hay fever) Common cold Influenza Nonallergic rhinitis (e.g., vasomotor rhinitis) Environmental irritants (e.g., pollution, smoke) Nasal polyps Dry air Cold air Spicy foods Sunlight (photic sneeze reflex) Asthma Chronic obstructive pulmonary disease (COPD) Pneumonia Anxiety Heart failure Pulmonary embolism Anemia Bronchitis Interstitial lung disease Obesity Asthma Chronic obstructive pulmonary disease (COPD) Bronchitis Pneumonia Allergic reactions Gastroesophageal reflux disease (GERD) Congestive heart failure Foreign body aspiration Vocal cord dysfunction Pulmonary edema Angina Myocardial infarction (heart attack) Costochondritis Gastroesophageal reflux disease (GERD) Pleurisy Pneumonia Pulmonary embolism Pericarditis Anxiety or panic attack Muscle strain Asthma Anxiety or panic attack Angina Chronic obstructive pulmonary disease (COPD) Gastroesophageal reflux disease (GERD) Pneumonia Pulmonary embolism Heart failure Pleurisy Costochondritis Anxiety or stress Caffeine consumption Dehydration Electrolyte imbalances Medication side effects Arrhythmias (e.g., atrial fibrillation, supraventricular tachycardia) Hyperthyroidism Heart failure Anemia Hypoglycemia Dehydration Low blood sugar (hypoglycemia) Orthostatic hypotension Anemia Anxiety or stress Inner ear disorders (e.g., vestibular neuritis, Meniere's disease) Migraine Medication side effects Hypotension Heart problems (e.g., arrhythmias, heart failure) Dehydration Low blood sugar Orthostatic hypotension Anxiety or stress Anemia Hyperventilation Medication side effects Hypotension Heart problems (e.g., arrhythmias, heart failure) Vasovagal syncope Vasovagal syncope Orthostatic hypotension Dehydration Cardiac arrhythmias Low blood sugar (hypoglycemia) Anemia Anxiety or panic attack Heart problems (e.g., aortic stenosis, heart failure) Medication side effects Seizures Benign paroxysmal positional vertigo (BPPV) Meniere's disease Vestibular neuritis Labyrinthitis Migraine-associated vertigo Acoustic neuroma Stroke or transient ischemic attack (TIA) Multiple sclerosis Traumatic brain injury Ototoxic medications Exposure to loud noise Age-related hearing loss Earwax blockage Ear infection Meniere's disease Otosclerosis Acoustic neuroma Medication side effects (e.g., NSAIDs, antibiotics, diuretics) Head or neck injuries Temporomandibular joint (TMJ) disorders Age-related hearing loss (presbycusis) Noise-induced hearing loss Earwax blockage Ear infection (otitis media or otitis externa) Meniere's disease Otosclerosis Acoustic neuroma Medication side effects (e.g., ototoxic drugs) Head or neck injuries Congenital hearing loss Otitis media (middle ear infection) Otitis externa (swimmer's ear) Earwax blockage Eustachian tube dysfunction Temporomandibular joint (TMJ) disorders Sinusitis Tonsillitis Dental problems (e.g., toothache, abscess) Barotrauma (pressure-related ear pain) Foreign object in the ear Otitis externa (swimmer's ear) Otitis media (middle ear infection) Ruptured eardrum Earwax blockage Foreign object in the ear Allergic rhinitis (hay fever) Eczema or dermatitis of the ear canal Fungal infection (e.g., otomycosis) Chronic suppurative otitis media Cholesteatoma Refractive errors (e.g., nearsightedness, farsightedness, astigmatism) Presbyopia (age-related difficulty focusing) Cataracts Glaucoma Age-related macular degeneration (AMD) Diabetic retinopathy Retinal detachment Migraine with aura Dry eye syndrome Optic neuritis Refractive errors (e.g., near-sightedness, farsightedness, astigmatism) 2. Presbyopia (age-related difficulty focusing) Cataracts Dry eye syndrome Glaucoma Age-related macular degeneration (AMD) Diabetic retinopathy Migraine with aura Eye strain (asthenopia) Corneal abrasion or ulcer Dry eye syndrome Corneal abrasion or ulcer Conjunctivitis (pink eye) Uveitis (inflammation of the uvea) Glaucoma Scleritis (inflammation of the sclera) Optic neuritis Sinusitis Migraine headache Foreign object in the eye Conjunctivitis (pink eye) Dry eye syndrome Allergic rhinitis (hay fever) Stye or chalazion Blepharitis (inflammation of the eyelid) Corneal ulcer Dacryocystitis (infection of the tear duct) Viral or bacterial infection Foreign object in the eye Ectropion or entropion (eyelid turning in or out) Migraine headache Conjunctivitis (pink eye) Corneal abrasion or ulcer Uveitis (inflammation of the uvea) Meningitis Encephalitis Subarachnoid hemorrhage Iritis (inflammation of the iris) Cataracts Retinal detachment Dry eye syndrome Aging Medication side effects (e.g., antihistamines, decongestants) Sjogren's syndrome Blepharitis (inflammation of the eyelid) Computer vision syndrome Allergies Contact lens use Vitamin A deficiency Hormonal changes (e.g., menopause) Medication side effects (e.g., antihistamines, decongestants, antidepressants) Dehydration Sjogren's syndrome Mouth breathing Smoking or tobacco use Aging Radiation therapy to the head or neck Diabetes Alcohol consumption Anxiety or stress Dehydration Diabetes mellitus (type 1 or type 2) Diabetes insipidus Dry mouth Medication side effects (e.g., diuretics) Alcohol consumption Anxiety or stress Hot or dry climate Kidney disease Hypercalcemia (high blood calcium levels) Urinary tract infection (UTI) Diabetes mellitus (type 1 or type 2) Diabetes insipidus Overactive bladder Interstitial cystitis (painful bladder syndrome) Enlarged prostate (benign prostatic hyperplasia, BPH) Prostatitis (inflammation of the prostate) Diuretic medications Excessive fluid intake Kidney disease Benign prostatic hyperplasia (BPH) Diabetes mellitus (type 1 or type 2) Diabetes insipidus Overactive bladder Sleep apnea Heart failure Kidney disease Medication side effects (e.g., diuretics) Excessive fluid intake before bedtime Urinary tract infection (UTI) Urinary tract infection (UTI) Interstitial cystitis (painful bladder syndrome) Kidney stones Urethritis Vaginitis (in women) Prostatitis (in men) Sexually transmitted infections (e.g., chlamydia, gonorrhea) Bladder cancer Irritation from personal care products Yeast infection (candidiasis) Urinary tract infection (UTI) Kidney stones Bladder or kidney infection Benign prostatic hyperplasia (BPH) Prostatitis (in men) Bladder or kidney cancer Polycystic kidney disease Medication side effects (e.g., blood thinners) Vigorous exercise Glomerulonephritis (kidney inflammation) Overactive bladder Stress incontinence Urge incontinence Overflow incontinence Functional incontinence Enlarged prostate (benign prostatic hyperplasia, BPH) Urinary tract infection (UTI) Neurological disorders (e.g., multiple sclerosis, Parkinson's disease) Diabetes Pregnancy or childbirth (in women) Urinary tract infection (UTI) Overactive bladder Diabetes mellitus (type 1 or type 2) Diabetes insipidus Interstitial cystitis (painful bladder syndrome) Enlarged prostate (benign prostatic hyperplasia, BPH) Prostatitis (in men) Diuretic medications Excessive fluid intake Kidney disease Overactive bladder Urinary tract infection (UTI) Interstitial cystitis (painful bladder syndrome) Enlarged prostate (benign prostatic hyperplasia, BPH) Prostatitis (in men) Diabetes mellitus (type 1 or type 2) Neurological disorders (e.g., multiple sclerosis, Parkinson's disease) Bladder cancer Kidney stones Medication side effects (e.g., diuretics) Polycystic ovary syndrome (PCOS) Pregnancy or miscarriage Hormonal imbalances Menopause or perimenopause Uterine fibroids Endometriosis Eating disorders (e.g., anorexia, bulimia) Stress or anxiety Excessive exercise Thyroid dysfunction Pregnancy Menopause or perimenopause Polycystic ovary syndrome (PCOS) Eating disorders (e.g., anorexia bulimia) Hormonal imbalances (e.g., hyperprolactinemia) Thyroid dysfunction (hypothyroidism or hyperthyroidism) Excessive exercise Stress or anxiety Uterine scarring (Asherman's syndrome) Birth control (e.g., oral contraceptives, IUD, implant) Primary dysmenorrhea (no underlying cause) Endometriosis Uterine fibroids Adenomyosis Pelvic inflammatory disease (PID) Ovarian cysts Cervical stenosis Intrauterine device (IUD) Infections (e.g., sexually transmitted infections) Ectopic pregnancy Hormonal changes during the menstrual cycle Chemical changes in the brain (e.g., serotonin levels) Genetics Stress or emotional factors Dietary factors (e.g., high salt intake, caffeine) Lack of exercise Alcohol or tobacco use Sleep disturbances Vitamin or mineral deficiencies (e.g., magnesium, vitamin B6) History of depression or mood disorders Normal physiological discharge Bacterial vaginosis Yeast infection (candidiasis) Trichomoniasis Sexually transmitted infections (e.g., gonorrhea, chlamydia) Pelvic inflammatory disease (PID) Atrophic vaginitis (postmenopausal) Cervicitis (inflammation of the cervix) Foreign object (e.g., retained tampon) Allergic reaction or irritation Yeast infection (candidiasis) Bacterial vaginosis Trichomoniasis Allergic reaction or irritation (e.g., soaps, detergents, feminine hygiene products) Lichen sclerosus Atrophic vaginitis (postmenopausal) Contact dermatitis Eczema or psoriasis Sexually transmitted infections (e.g., herpes, syphilis) Pinworm infection Cardiovascular disease Diabetes Hypertension (high blood pressure) Obesity Medication side effects (e.g., antidepressants, blood pressure medications) Tobacco, alcohol, or drug use Psychological factors (e.g., stress, anxiety, depression) Hormonal imbalances (e.g., low testosterone) Neurological disorders (e.g., multiple sclerosis, Parkinson's disease) Peyronie's disease (penile curvature) Hormonal imbalances (e.g., low testosterone, menopause) Depression or anxiety Chronic stress Relationship issues Medication side effects (e.g., antidepressants, blood pressure medications) Sleep disturbances Alcohol or drug use Fatigue or exhaustion Chronic illness or pain Aging Stress or anxiety Depression Sleep apnea Restless legs syndrome Medication side effects (e.g., stimulants, antidepressants) Chronic pain Caffeine or alcohol consumption Poor sleep habits Shift work or jet lag Hormonal changes (e.g., menopause, pregnancy) Sleep apnea Insomnia Restless legs syndrome Periodic limb movement disorder Circadian rhythm sleep disorders (e.g., shift work, jet lag) Stress or anxiety Depression Chronic pain Medication side effects (e.g., stimulants, antidepressants) Gastroesophageal reflux disease (GERD) Generalized anxiety disorder (GAD) Panic disorder Social anxiety disorder Post-traumatic stress disorder (PTSD) Obsessive-compulsive disorder (OCD) Phobias Acute stress reaction Adjustment disorder Substance-induced anxiety disorder Medical conditions (e.g., hyperthyroidism, heart disease, respiratory disorders) Major depressive disorder Bipolar disorder Dysthymia (persistent depressive disorder) Postpartum depression Seasonal affective disorder (SAD) Substance-induced depressive disorder Adjustment disorder with depressed mood Medical conditions (e.g., hypothyroidism, chronic illness, hormonal imbalances) Grief or loss Side effects of medications (e.g., antidepressants, beta-blockers) Bipolar disorder Premenstrual syndrome (PMS) or premenstrual dysphoric disorder (PMDD) Borderline personality disorder Hormonal imbalances (e.g., thyroid dysfunction, menopause) Anxiety or stress Depression Substance abuse or withdrawal Sleep disturbances Chronic medical conditions (e.g., multiple sclerosis, Parkinson's disease) Medication side effects (e.g., corticosteroids, anticonvulsants) Anxiety or stress Depression Sleep disturbances Premenstrual syndrome (PMS) Hormonal imbalances (e.g., thyroid dysfunction, menopause) Substance abuse or withdrawal Chronic pain or illness Bipolar disorder Attention deficit hyperactivity disorder (ADHD) Medication side effects (e.g., corticosteroids, stimulants) Normal aging Alzheimer's disease Dementia (e.g., vascular dementia, Lewy body dementia, frontotemporal dementia) Mild cognitive impairment Medication side effects (e.g., anticholinergics, sedatives) Sleep disturbances or sleep apnea Stress or anxiety Depression Vitamin deficiencies (e.g., vitamin B12, vitamin D) Thyroid dysfunction (hypothyroidism or hyperthyroidism) Attention deficit hyperactivity disorder (ADHD) Anxiety or stress Depression Sleep disturbances or sleep apnea Chronic fatigue syndrome Anemia Medication side effects (e.g., sedatives, antihistamines) Substance abuse or withdrawal Thyroid dysfunction (hypothyroidism or hyperthyroidism) Vitamin deficiencies (e.g., vitamin B12, vitamin D) Delirium Dementia (e.g., Alzheimer's disease, vascular dementia, Lewy body dementia) Medication side effects (e.g., anticholinergics, sedatives, opioids) Alcohol or drug intoxication or withdrawal Electrolyte imbalances (e.g., hyponatremia, hypercalcemia) Infections (e.g., urinary tract infection, meningitis, encephalitis) Hypoglycemia (low blood sugar) Hypoxia (low oxygen levels) Head injury or concussion Seizure disorders Essential tremor Parkinson's disease Multiple sclerosis Stroke or transient ischemic attack (TIA) Hyperthyroidism (overactive thyroid) Medication side effects (e.g., stimulants, antidepressants, lithium) Alcohol or drug withdrawal Anxiety or stress Peripheral neuropathy Cerebellar disorders Epilepsy Stroke or transient ischemic attack (TIA) Brain tumors or cysts Traumatic brain injury Infections (e.g., meningitis, encephalitis) Electrolyte imbalances (e.g., hyponatremia, hypocalcemia) Alcohol or drug withdrawal Hypoglycemia (low blood sugar) Medication side effects (e.g., antidepressants, antipsychotics) Genetic or metabolic disorders Muscle strain or overuse Dehydration or electrolyte imbalances Chronic fatigue syndrome Anemia Myasthenia gravis Multiple sclerosis Peripheral neuropathy (e.g., diabetic neuropathy) Fibromyalgia Infections (e.g., influenza, mononucleosis) Thyroid dysfunction (hypothyroidism or hyperthyroidism) Peripheral neuropathy (e.g., diabetic neuropathy, alcoholic neuropathy) Carpal tunnel syndrome Herniated disc or spinal stenosis Multiple sclerosis Stroke or transient ischemic attack (TIA) Vitamin deficiencies (e.g., vitamin B12, vitamin B6) Raynaud's phenomenon Complex regional pain syndrome (CRPS) Thoracic outlet syndrome Lyme disease Peripheral neuropathy (e.g., diabetic neuropathy, alcoholic neuropathy) Carpal tunnel syndrome Herniated disc or spinal stenosis Multiple sclerosis Anxiety or hyperventilation Raynaud's phenomenon Vitamin deficiencies (e.g., vitamin B12, vitamin B6) Thoracic outlet syndrome Fibromyalgia Lyme disease Congestive heart failure Kidney disease Liver disease (e.g., cirrhosis) Chronic venous insufficiency Lymphedema Deep vein thrombosis (DVT) Infection or cellulitis Pregnancy Medication side effects (e.g., calcium channel blockers, nonsteroidal anti-inflammatory drugs) Prolonged standing or sitting Inflammation or infection (e.g., cellulitis, abscess) Insect bites or stings Allergic reaction or contact dermatitis Sunburn or sun sensitivity Rosacea Eczema or atopic dermatitis Psoriasis Drug-induced rash Vasculitis Lupus erythematosus Contact dermatitis (e.g., poison ivy, nickel allergy) Eczema or atopic dermatitis Psoriasis Infections (e.g., fungal, bacterial, viral) Allergic reaction or drug-induced rash Insect bites or stings Hives (urticaria) Heat rash (miliaria) Seborrheic dermatitis Lupus erythematosus Dry skin (xerosis) Eczema or atopic dermatitis Allergic reaction or contact dermatitis Insect bites or stings Psoriasis Hives (urticaria) Fungal infections (e.g., athlete's foot, ringworm) Scabies or lice infestation Liver or kidney disease Medication side effects (e.g., opioids, antihistamines) Accidental injury or trauma Aging or thinning skin Medication side effects (e.g., anticoagulants, corticosteroids, nonsteroidal anti-inflammatory drugs) Vitamin deficiencies (e.g., vitamin C, vitamin K) Hemophilia or other bleeding disorders Liver disease (e.g., cirrhosis) Vasculitis Connective tissue disorders (e.g., Ehlers-Danlos syndrome) Platelet disorders (e.g., thrombocytopenia) Leukemia or lymphoma Trauma or injury Anticoagulant medications (e.g., warfarin, heparin) Bleeding disorders (e.g., hemophilia, von Willebrand disease) Thrombocytopenia (low platelet count) Liver disease (e.g., cirrhosis) Blood vessel abnormalities (e.g., arteriovenous malformation) Peptic ulcers Cancer (e.g., colorectal, stomach, esophageal) Infections (e.g., endocarditis) Inflammatory conditions (e.g., Crohn's disease, ulcerative colitis) Infections (e.g., bacterial, viral, fungal) Inflammatory conditions (e.g., lupus, rheumatoid arthritis) Cancer (e.g., lymphoma, leukemia, metastatic cancer) Allergic reaction Medication side effects (e.g., phenytoin, allopurinol) Lymphatic obstruction (e.g., filariasis) Cat-scratch disease Autoimmune disorders (e.g., sarcoidosis, Kawasaki disease) Castleman disease Kikuchi disease nfections (e.g., tuberculosis, bacterial endocarditis, HIV) Menopause or perimenopause Hyperhidrosis (excessive sweating) Sleep apnea Medication side effects (e.g., antidepressants, antipyretics) Cancer (e.g., lymphoma, leukemia) Anxiety or stress Gastroesophageal reflux disease (GERD) Hyperthyroidism (overactive thyroid) Hormone imbalances (e.g., low testosterone, adrenal insufficiency) Anemia (e.g., iron deficiency, vitamin B12 deficiency, hemolytic anemia) Shock or low blood volume Hypotension (low blood pressure) Hypoglycemia (low blood sugar) Hypoxia (low oxygen levels) Vasovagal syncope (fainting) Chronic kidney disease Medication side effects (e.g., beta-blockers, antihypertensives) Vitamin D deficiency Congestive heart failure Liver disease (e.g., hepatitis, cirrhosis, liver failure) Hemolytic anemia Gallstones or cholecystitis Pancreatic cancer or pancreatitis Gilbert's syndrome Alcoholic liver disease Medication side effects (e.g., acetaminophen, isoniazid) Neonatal jaundice Crigler-Najjar syndrome Dubin-Johnson syndrome Hypoxia (low oxygen levels) Cold exposure or Raynaud's phenomenon Congenital heart disease (e.g., tetralogy of Fallot, Eisenmenger's syndrome) Pulmonary embolism Chronic obstructive pulmonary disease (COPD) Asthma Methemoglobinemia Venous insufficiency Acrocyanosis Medication side effects (e.g., amiodarone, minocycline) Vitiligo Melasma Tinea versicolor Post-inflammatory hyperpigmentation Age spots (solar lentigines) Birthmarks (e.g., cafe-au-lait spots, port-wine stains) Infections (e.g., impetigo, erythrasma) Albinism Drug-induced skin pigmentation Acanthosis nigricans Acne Eczema or atopic dermatitis Psoriasis Warts Moles (nevi) Infections (e.g., bacterial, fungal, viral) Insect bites or stings Skin cancer (e.g., basal cell carcinoma, squamous cell carcinoma, melanoma) Seborrheic keratosis Cysts (e.g., epidermoid cyst, sebaceous cyst) Allergic reaction (e.g., food, medication, insect sting or bite) 2. Infections (e.g., viral, bacterial) Stress or anxiety Physical stimulation (e.g., pressure, heat, cold) Autoimmune disorders (e.g., lupus, rheumatoid arthritis) Dermatographism Contact dermatitis Exercise-induced urticaria Cold urticaria Solar urticaria Androgenetic alopecia (male-pattern or female-pattern baldness) Telogen effluvium (temporary hair loss due to stress, pregnancy, or surgery) Alopecia areata (patchy hair loss) Medication side effects (e.g., chemotherapy, beta-blockers) Scarring alopecia (e.g., from injuries, infections, or autoimmune disorders) Trichotillomania (hair pulling disorder) Traction alopecia (from tight hairstyles or hair extensions) Nutritional deficiencies (e.g., iron, zinc, biotin) Hypothyroidism (underactive thyroid) Systemic lupus erythematosus (SLE) Fungal nail infection (onychomycosis) Trauma or injury Psoriasis Lichen planus Raynaud's phenomenon Peripheral vascular disease Anemia Connective tissue disorders (e.g., lupus, scleroderma) Nutritional deficiencies (e.g., iron, zinc, biotin) Medication side effects (e.g., chemotherapy) Acute laryngitis (inflammation of the vocal cords due to infection or irritation) Gastroesophageal reflux disease (GERD) Chronic obstructive pulmonary disease (COPD) Vocal cord nodules or polyps Thyroid disorders (e.g., hypothyroidism, hyperthyroidism) Allergies or postnasal drip Smoking or exposure to secondhand smoke Neurological disorders (e.g., Parkinson's disease, stroke) Cancer (e.g., laryngeal cancer) Medication side effects (e.g., ACE inhibitors, beta-blockers) Gastroesophageal reflux disease (GERD) Esophageal spasm or motility disorders Neurological disorders (e.g., stroke, Parkinson's disease) Benign esophageal strictures Cancer (e.g., esophageal cancer) Zenker's diverticulum Eosinophilic esophagitis Scleroderma Achalasia Medication side effects (e.g., bisphosphonates) Gastroesophageal reflux disease (GERD) Hiatal hernia Peptic ulcers Medication side effects (e.g., nonsteroidal anti-inflammatory drugs, antibiotics) Pregnancy Stress or anxiety Smoking or exposure to secondhand smoke Scleroderma Obesity or overeating Esophageal cancer Musculoskeletal strain or injury (e.g., sprains, herniated disc) Osteoarthritis Spinal stenosis Degenerative disc disease Spondylolisthesis Fibromyalgia Infections (e.g., spinal osteomyelitis, discitis) Ankylosing spondylitis Rheumatoid arthritis Cancer (e.g., bone metastases) Herniated disc or spinal stenosis Piriformis syndrome Sacroiliitis or sacroiliac joint dysfunction Osteoarthritis or rheumatoid arthritis Spinal cord compression or cauda equina syndrome Piriformis syndrome Trauma or injury Infections (e.g., spinal epidural abscess) Cancer (e.g., metastatic cancer) Referred pain from kidney stones or pelvic pathology usculoskeletal strain or injury (e.g., whiplash) Cervical spondylosis or osteoarthritis Meningitis or other infections (e.g., Lyme disease) Cervical disc herniation Referred pain from shoulder or upper back pathology Tension headache or migraine Fibromyalgia Cervical dystonia or other movement disorders Temporomandibular joint (TMJ) dysfunction Cervical radiculopathy Osteoarthritis Rheumatoid arthritis Psoriatic arthritis Ankylosing spondylitis Gout or pseudogout Systemic lupus erythematosus (SLE) Sjogren's syndrome Reactive arthritis Infectious arthritis (e.g., septic arthritis, Lyme disease) Juvenile idiopathic arthritis Tennis elbow or golfer's elbow Rotator cuff tendinitis Achilles tendinitis Patellar tendinitis De Quervain's tenosynovitis Bicipital tendinitis Plantar fasciitis Trigger finger Medial epicondylitis (pitcher's elbow) Extensor tendinitis of the wrist (writer's cramp) Trochanteric bursitis Olecranon bursitis Prepatellar bursitis Subacromial bursitis Ischial bursitis Iliopsoas bursitis Retrocalcaneal bursitis Suprapatellar bursitis Anserine bursitis Calcaneal bursitis Hyperuricemia (high uric acid levels) Family history of gout Obesity or metabolic syndrome Alcohol consumption Diuretic medications Kidney disease or insufficiency Lead exposure Hypothyroidism Psoriasis Hemolytic anemia Overuse or repetitive stress on the plantar fascia Obesity or weight gain Flat feet or high arches Poor footwear or improper shoe fit Tight calf muscles or Achilles tendon Aging or degenerative changes in the foot Diabetes or other systemic diseases Arthritis or gout Trauma or injury to the foot Inflammatory conditions (e.g., ankylosing spondylitis) Add Disease

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