Recent Articles
Daily cup of coffee may prevent afib recurrence
Gene-editing therapy lowers harmful blood fats in early study
What is EMDR therapy, and who can it help?
GLP-1 drugs versus bariatric surgery for treating obesity
Trying to lose weight? Be careful not to lose muscle
Two dumbbells, three exercises, and 10 minutes
Easing the emotional burden of IBS
Modify your push-ups to meet your fitness level
What is long QT syndrome?
Stroke survivors may benefit from very low LDL levels
/
Health A to Z
The A to Z library is a collection of articles covering many of the most commonly searched medical conditions. Each article contains a description of the condition; the symptoms; how it is diagnosed, prevented, and treated; the prognosis; and when to seek professional advice.
- Abdominal adhesions
- Abdominal aortic aneurysm
- Absence seizures (petit mal seizures)
- Achalasia
- Acne
- Acoustic neuroma
- Acute bronchitis
- Acute Lymphocytic Leukemia (ALL) in Adults
- Acute Lymphocytic Leukemia (ALL) in Children
- Acute Myeloid Leukemia (AML)
- Acute pancreatitis
- Acute prostatitis
- Acute sinusitis
- Adenocarcinoma of the lung
- Adrenocortical Carcinoma
- Age spots (solar lentigo, liver spots)
- Aging overview
- Alcohol use disorder (alcoholism)
- Alcohol withdrawal
- Allergy overview
- Alopecia areata
- Altitude sickness
- Alzheimer's disease
- Amenorrhea
- Amyloidosis
- Amyotrophic lateral sclerosis (ALS)
- Anal cancer
- Anal disorders
- Anal itch (pruritus ani)
- Anaphylaxis
- Anemia overview
- Angina
- Ankle fracture
- Ankle sprain
- Ankylosing spondylitis
- Anorexia nervosa
- Anterior cruciate ligament (ACL) injuries
- Antibiotic-associated diarrhea
- Antiphospholipid antibody syndrome
- Antisocial personality disorder
- Aplastic anemia
- Appendicitis
- Arm fracture
- Arthritis associated with inflammatory bowel disease
- Asthma
- Astigmatism
- Asymptomatic bacteriuria
- Atherosclerosis
- Athlete's foot (tinea pedis)
- Atrial fibrillation
- Attention deficit hyperactivity disorder (ADHD)
- Autism (autism spectrum disorder)
- Back pain
- Bacterial vaginosis (Gardnerella vaginitis)
- Balanitis
- Barotrauma
- Bartholin's gland cyst
- Basal cell carcinoma
- Bedsores (decubitus ulcers)
- Bedwetting (enuresis)
- Behcet's disease
- Bell's palsy
- Bile duct diseases
- Biliary colic
- Bipolar disorder (manic depressive illness or manic depression)
- Black eye
- Bladder cancer
- Bladder infection (cystitis)
- Blepharitis
- Blisters (overview)
- Body lice
- Boils and carbuncles
- Borderline personality disorder
- Botulism
- Bowel obstruction
- Bradycardia
- Brain abscess
- Brain tumor overview
- Breast cancer
- Broken jaw
- Broken nose (nasal fracture)
- Bulimia
- Bunion
- Bursitis
- Caesarean section
- Campylobacteriosis
- Cancer overview
- Candidiasis
- Carbon monoxide poisoning
- Carcinoid tumors of the lung
- Cardiac arrhythmias
- Cardiomyopathy
- Carotid ultrasound (carotid Doppler)
- Carpal tunnel syndrome
- Cataracts
- Celiac disease (non-tropical sprue)
- Cellulitis
- Cervical cancer
- Cervical polyps
- Cervicitis
- Chemical Injury to the Eye
- Chickenpox (varicella)
- Chlamydia
- Cholecystitis
- Chondromalacia patella
- Chondrosarcoma
- Choroidal melanoma
- Chronic hepatitis
- Chronic laryngitis
- Chronic Lymphocytic Leukemia (CLL)
- Chronic obstructive pulmonary disease (COPD)
- Chronic otitis media, cholesteatoma, and mastoiditis
- Chronic pancreatitis
- Chronic prostatitis
- Chronic sinusitis (in adults)
- Cirrhosis
- Cluster headache
- Cogan's syndrome
- Collarbone (clavicle) fracture
- Colon polyps
- Colorectal cancer
- Coma and Persistent Vegetative State
- Common cold (viral rhinitis)
- Complex regional pain syndrome (CRPS)
- Computed tomography (CT scan) for back problems
- Concussion
- Constipation and impaction
- Constipation and impaction.
- Contact Dermatitis
- Conversion disorder (functional neurological symptom disorder)
- Corneal abrasion
- Corns and calluses
- Coronary artery disease
- Creutzfeldt-Jakob disease (CJD)
- Crohn's disease
- Croup
- Curvature of the penis (Peyronie's disease)
- Cystic fibrosis
- Cysts (overview)
- Cytomegalovirus (CMV)
- Dandruff
- Decompression sickness
- Delusional disorder
- Dementia
- Depression overview
- Dermatofibroma
- Detached retina
- Developmental dysplasia of the hip
- Deviated septum
- Diabetes mellitus overview
- Diabetic ketoacidosis
- Diabetic nephropathy
- Diabetic neuropathies
- Diarrhea
- Dislocated lens
- Diverticulosis and diverticulitis
- Double vision (diplopia)
- Down syndrome
- Drooping Eyelid (Ptosis)
- Dry eye syndrome
- Dry skin
- Dysfunctional uterine bleeding
- Dyslexia
- Dysuria
- Earache
- Eczema
- Emphysema
- Encephalitis
- Encopresis (fecal soiling) in children
- End-stage renal disease
- Endocarditis
- Endometriosis
- Endophthalmitis
- Endoscopic retrograde cholangiopancreatography (ERCP)
- Enlarged prostate (benign prostatic hyperplasia)
- Epidemic pleurodynia
- Epidermoid cyst
- Epididymitis and orchitis
- Epiglottitis
- Epilepsy
- Esophageal cancer
- Esophageal rings and webs
- Esophageal varices
- Esophagitis
- Essential tremor
- Ewing's Sarcoma
- Extragonadal Germ Cell Tumors
- Eye socket fracture (fracture of the orbit)
- Fallen arch
- Fallopian tube cancer
- Farsightedness (hyperopia)
- Febrile seizures
- Fecal incontinence
- Felon
- Female Infertility
- Fever
- Fibroids
- Fibromyalgia
- Fifth disease (erythema infectiosum)
- Finger dislocation
- Flu (influenza)
- Food allergy
- Food poisoning
- Foot sprain
- Foot ulcers
- Foreign body In eye
- Foreign objects in the ear
- Friction blisters
- Friedreich's ataxia
- Frostbite
- Gallbladder and bile duct cancer
- Gallstones
- Gas (flatulence)
- Gastritis
- Gastroenteritis in adults
- Gastroenteritis In children
- Gastroesophageal reflux disease (GERD)
- Gastrointestinal amebiasis
- Gaucher Disease
- Generalized anxiety disorder
- Generalized seizures (grand mal seizures)
- Genital herpes
- Genital warts
- Gestational diabetes
- Giant cell arteritis (temporal arteritis)
- Giardiasis
- Glaucoma
- Glioblastoma multiforme
- Glomerulonephritis
- Gonorrhea
- Gout
- Granulomatosis with polyangiitis
- Graves' disease
- Graves' eye disease
- Guillain-Barre syndrome
- Hair loss
- Hammertoe
- Hay fever (allergic rhinitis)
- Head and neck cancer
- Head injury In adults
- Head lice
- Headache overview
- Hearing Loss in Adults
- Heart attack (myocardial infarction)
- Heart failure
- Heart Murmur
- Heart valve problems
- Heat stroke (hyperthermia)
- Heel pain
- Hematuria
- Hemochromatosis
- Hemolytic anemia
- Hemophilia
- Hemorrhagic stroke
- Hemorrhoids
- Hepatitis A
- Hepatitis B
- Hepatitis C
- Hepatitis Overview
- Hereditary-patterned baldness
- Hernia
- Herniated disc
- Hiatal hernia
- High blood pressure (hypertension)
- High cholesterol (hypercholesterolemia)
- Hip fracture
- Hirsutism
- HIV/AIDS
- Hives (urticaria)
- Hodgkin Lymphoma
- Hot flashes
- Human papillomavirus (HPV)
- Huntington's disease (chorea)
- Hydrocephalus
- Hyperkeratosis
- Hyperthyroidism
- Hypoglycemia
- Hypoparathyroidism
- Hypothyroidism
- Ichthyosis
- Illness anxiety disorder
- Immune thrombocytopenic purpura (ITP)
- Impetigo
- Impotence (erectile dysfunction)
- Infectious arthritis
- Infectious mononucleosis
- Ingrown toenail
- Inguinal hernia
- Insomnia
- Interstitial cystitis
- Intracranial aneurysms
- Iron deficiency
- Irritable bowel syndrome (IBS)
- Jet lag
- Jock itch (tinea cruris)
- Juvenile arthritis
- Kaposi's Sarcoma
- Kawasaki disease
- Keloids
- Keratitis
- Kidney cancer
- Kidney failure
- Kidney stones
- Knee sprain
- Lactose intolerance
- Lacunar stroke
- Langerhans' cell histiocytosis
- Laryngitis
- Latex allergy
- Lazy eye (amblyopia)
- Leg edema
- Leg fracture
- Leg strain
- Leukemia (Overview)
- Liver cancer
- Long QT syndrome
- Lung cancer overview
- Lupus (systemic lupus erythematosus)
- Lyme disease
- Lymphedema
- Lymphoma overview
- Macular degeneration
- Major depression
- Malaria
- Male infertility
- Malignant hyperthermia
- Marfan syndrome
- Maturity onset diabetes of the young (MODY)
- Measles (rubeola)
- Meckel's diverticulum
- Medication allergy
- Melanoma
- Melasma (chloasma)
- Menière's disease
- Meningitis
- Menopause and perimenopause
- Mesothelioma
- Metastatic brain tumors
- Mid-menstrual cycle pain (mittelschmerz)
- Middle-ear infection (otitis media)
- Migraine
- Miscarriage
- Mitral valve prolapse
- Moles (nevi)
- Molluscum contagiosum
- Morton's neuroma
- MRSA skin infection
- Multiple myeloma
- Multiple sclerosis
- Mumps
- Muscle strain
- Muscular dystrophy
- Myalgic encephalomyelitis/chronic fatigue syndrome
- Myasthenia gravis
- Myelodysplastic Syndromes
- Myocarditis
- Myositis
- Nabothian cysts
- Nail trauma
- Narcolepsy
- Nasal polyps
- Nausea
- Nearsightedness (myopia)
- Neuroblastoma
- Neurofibromatosis
- Non-Hodgkin Lymphoma
- Non-Small Cell Lung Cancer
- Nosebleed (epistaxis)
- Obesity
- Obsessive-compulsive disorder (OCD)
- Onycholysis
- Optic nerve swelling (papilledema)
- Oral cancer
- Osgood-Schlatter disease
- Osteoarthritis
- Osteoporosis
- Osteosarcoma
- Ovarian cancer
- Paget's disease of bone
- Pain
- Painful sexual intercourse (dyspareunia)
- Pancreatic cancer
- Pancreatitis overview
- Panic disorders
- Parathyroid Cancer
- Parkinson's disease
- Paronychia
- Partial seizures (focal seizures)
- Pelvic inflammatory disease (PID)
- Peptic ulcer
- Perforated eardrum
- Pericarditis
- Peripheral arterial disease
- Peritonsillar abscess
- Persistent depressive disorder (dysthymia)
- Pertussis (whooping cough)
- Phimosis and paraphimosis
- Phobia
- Pink eye (conjunctivitis)
- Pituitary tumors
- Pityriasis rosea
- Plague (Yersinia Pestis)
- Plantar fasciitis
- Pleurisy and pleural effusion
- Pneumoconiosis
- Pneumonia
- Pneumothorax
- Polio
- Polyarteritis nodosa
- Polychondritis
- Polycystic kidney disease
- Polycystic ovary syndrome
- Polymyalgia rheumatica
- Post-polio syndrome
- Post-traumatic stress disorder
- Posterior cruciate ligament (PCL) injuries
- Postpartum depression
- Prediabetes
- Preeclampsia and eclampsia
- Premature ejaculation
- Premenstrual syndrome (PMS)
- Presbyopia
- Priapism
- Prostate cancer
- Pseudogout (CPPD)
- Psoriasis
- Psoriatic arthritis
- Pubic lice or crab lice
- Pyelonephritis
- Rash
- Raynaud's phenomenon
- Reactive arthritis
- Rectocele
- Respiratory syncytial virus
- Restless legs syndrome
- Retinal vessel occlusion
- Retinitis pigmentosa
- Retinoblastoma
- Retinopathy
- Retrobulbar neuritis
- Retrograde Ejaculation
- Reye syndrome
- Rhabdomyosarcoma
- Rheumatoid arthritis
- Ringworm (tinea)
- Rocky Mountain spotted fever
- Rosacea
- Rotator cuff injury
- Salivary gland disorders
- Sarcoidosis
- Scabies
- Scarlet fever
- Schizophrenia
- Schizotypal personality disorder
- Sciatica
- Scleritis
- Scleroderma
- Scoliosis
- Sebaceous cysts
- Seborrheic dermatitis
- Seborrheic keratoses
- Secondary hypertension
- Sedative, hypnotic, or anxiolytic drug use disorder
- Seizure Overview
- Sexually transmitted diseases (overview)
- Shigellosis
- Shin splints
- Shingles (herpes zoster)
- Shoulder dislocation
- Shoulder sprain
- Sick sinus syndrome
- Sickle cell anemia
- Sjögren's syndrome
- Skin tags (acrochordon)
- Sleep apnea
- Sleepwalking and sleep terrors
- Small Cell Lung Cancer
- Smallpox
- Soft Tissue Sarcoma
- Somatic symptom disorder
- Sore throat (pharyngitis)
- Spider veins
- Spina bifida
- Spinal cord trauma
- Spinal cord tumors
- Sprain (overview)
- Squamous cell carcinoma of the lung
- Squamous Cell Carcinoma of the Skin
- Stomach Cancer
- Stroke overview
- Stuttering
- Styes and chalazions
- Subarachnoid hemorrhage
- Subdural hematoma
- Sun allergy (photosensitivity)
- Sun-damaged skin
- Superficial thrombophlebitis
- Swallowed object
- Swimmer's ear (otitis externa)
- Syphilis
- Tachycardia
- Takayasu's arteritis
- Tear duct infection (dacryocystitis)
- Telogen effluvium
- Tendonitis
- Tennis elbow (lateral epicondylitis)
- Tension headache
- Testicular cancer
- Testicular torsion
- Tetanus
- Throat cancer (larynx and pharynx)
- Thrombocytopenia
- Thromboembolism (deep vein thrombosis and pulmonary embolism)
- Thrombotic stroke
- Thyroid cancer
- Tick bites
- Tics
- Tinea versicolor
- Tinnitus
- Toenail fungus (onychomycosis)
- Torn meniscus
- Torsional deformity
- Tourette syndrome
- Toxic shock syndrome
- Toxoplasmosis
- Transient ischemic attack (TIA)
- Traumatic dislocation of the hip
- Traveler's diarrhea
- Trichomoniasis
- Trigeminal neuralgia (tic douloureux)
- Tropical sprue
- Tuberculosis
- Type 1 diabetes mellitus
- Type 2 diabetes mellitus
- Ulcerative colitis
- Undescended testicle (cryptorchidism)
- Urethritis
- Urinary health
- Urinary incontinence
- Urinary tract infection in men
- Urinary tract infection in women
- Uterine and bladder prolapse
- Uterine Cancer
- Uveitis
- Vaginal atrophy (atrophic vaginitis)
- Vaginal cancer
- Vaginal discharge
- Vaginal yeast infection
- Vaginitis
- Varicose veins
- Vascular birthmarks
- Vasculitis overview
- Vertigo
- Vitamin B12 deficiency
- Vitiligo
- Vocal cord disorders
- Vulvar Cancer
- Warts
- Wax blockage of the ear canal
- Wilms' Tumor
- Wire localization biopsy of the breast
- Wrist sprain
- Yaws
Disclaimer:
As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles.
No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.
Recent Articles
Daily cup of coffee may prevent afib recurrence
Gene-editing therapy lowers harmful blood fats in early study
What is EMDR therapy, and who can it help?
GLP-1 drugs versus bariatric surgery for treating obesity
Trying to lose weight? Be careful not to lose muscle
Two dumbbells, three exercises, and 10 minutes
Easing the emotional burden of IBS
Modify your push-ups to meet your fitness level
What is long QT syndrome?
Stroke survivors may benefit from very low LDL levels
/
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