Diseases & Conditions
Explore detailed information on symptoms, causes, diagnosis, and treatment options.
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Achilles Tendinitis
Achilles tendinitis is an overuse injury of the Achilles tendon, the band of tissue that connects ca...
Acne
Acne is a chronic skin condition that occurs when hair follicles become plugged with oil and dead sk...
Alopecia Areata
Alopecia areata is an autoimmune disease that causes hair loss on the scalp, face, and sometimes oth...
Ankylosing Spondylitis
Ankylosing spondylitis is a type of arthritis that primarily affects the spine. It causes inflammati...
Antiphospholipid Syndrome (APS)
Antiphospholipid syndrome (APS) is an autoimmune disorder in which the immune system produces abnorm...
Arthritis
Arthritis is a broad term that refers to inflammation of one or more joints, causing pain, swelling,...
Avascular Necrosis (Osteonecrosis)
Avascular necrosis, also called osteonecrosis, is bone death caused by reduced blood flow to the bon...
Back Pain
Back pain is one of the most common medical problems, affecting most people at some point in their l...
Behçet's Disease
Behçet's disease is a rare disorder that causes blood vessel inflammation throughout the body. This ...
Bursitis
Bursitis is a painful condition that affects the small, fluid-filled sacs called bursae that cushion...
Carpal Tunnel Syndrome
Carpal tunnel syndrome is a common condition that causes pain, numbness, and tingling in the hand an...
Childhood Arthritis (Juvenile Idiopathic Arthritis)
Juvenile idiopathic arthritis (JIA), formerly known as juvenile rheumatoid arthritis, is the most co...
Chondromalacia Patella (Runner's Knee)
Chondromalacia patella refers to the softening and breakdown of the cartilage on the underside of th...
Complex Regional Pain Syndrome (CRPS)
Complex regional pain syndrome (CRPS) is a chronic pain condition that most often affects a limb (ar...
De Quervain's Tenosynovitis
De Quervain's tenosynovitis is a painful condition affecting the tendons on the thumb side of the wr...
Dermatomyositis
Dermatomyositis is an uncommon inflammatory disease characterized by muscle weakness and a distincti...
Discoid Lupus Erythematosus (DLE)
Discoid lupus erythematosus (DLE) is a chronic inflammatory skin condition that causes scarring skin...
Dupuytren's Contracture
Dupuytren's contracture is a hand deformity that usually develops over years, in which the tissue be...
Eczema (Atopic Dermatitis)
Eczema, or atopic dermatitis, is a chronic inflammatory skin condition that causes the skin to becom...
Ehlers-Danlos Syndrome (EDS)
Ehlers-Danlos syndrome (EDS) is a group of inherited disorders that affect the connective tissues — ...
Fibromyalgia
Fibromyalgia is a disorder characterized by widespread musculoskeletal pain accompanied by fatigue, ...
Flat Feet (Pes Planus)
Flat feet (pes planus) is a condition in which the arch of the foot is lower than normal or entirely...
Fractures (Bone Fractures)
A bone fracture is a break in the continuity of a bone. Fractures can range from a thin crack to a c...
Giant Cell Arteritis (Temporal Arteritis)
Giant cell arteritis is an inflammation of the blood vessels, especially the arteries that supply th...
Golfer's Elbow (Medial Epicondylitis)
Golfer's elbow (medial epicondylitis) is a painful condition caused by overuse of the forearm muscle...
Gout
Gout is a common and complex form of arthritis that can affect anyone. It's characterized by sudden,...
Hair Disorders
Hair disorders encompass a variety of conditions affecting hair growth, structure, and scalp health....
Hemophilic Arthropathy
Hemophilic arthropathy is progressive joint damage resulting from repeated bleeding into the joints ...
Hip Replacement Surgery
Hip replacement surgery is a procedure in which a doctor surgically removes a painful hip joint with...
Hypermobility Spectrum Disorder (HSD)
Hypermobility Spectrum Disorder (HSD) is a group of conditions characterized by joint hypermobility ...
Inclusion Body Myositis (IBM)
Inclusion body myositis (IBM) is the most common acquired muscle disease in adults over 50. It is a ...
Inflammatory Arthritis
Inflammatory arthritis is a term used to describe a group of conditions caused by an overactive immu...
Inflammatory Bowel Disease-Related Arthritis
Inflammatory arthritis associated with inflammatory bowel disease (IBD) — including Crohn's disease ...
Interstitial Lung Disease (ILD) in Rheumatic Diseases
Interstitial lung disease (ILD) in the context of rheumatic diseases refers to lung scarring and inf...
Keloids and Hypertrophic Scars
Keloids are raised overgrowths of scar tissue that occur at the site of a skin injury. Unlike hypert...
Knee Problems
The knee is the largest joint in the body. Knee problems are very common, and they occur in people o...
Low Bone Density (Osteopenia)
Osteopenia refers to bone mineral density that is lower than normal but not low enough to be classif...
Lupus
Lupus is a chronic, autoimmune disease that can damage any part of the body, including the skin, joi...
Lyme Disease
Lyme disease is an infectious disease caused by the bacteria Borrelia burgdorferi, transmitted to hu...
Tennis Elbow (Lateral Epicondylitis)
Tennis elbow (lateral epicondylitis) is a painful condition caused by overuse of the elbow, particul...
Marfan Syndrome
Marfan syndrome is a genetic disorder that affects the body's connective tissue. Connective tissue h...
Mixed Connective Tissue Disease (MCTD)
Mixed connective tissue disease (MCTD) is a rare autoimmune disorder that has overlapping features o...
Morton's Neuroma
Morton's neuroma is a painful condition affecting the ball of the foot, most commonly between the th...
Myasthenia Gravis
Myasthenia gravis is a chronic autoimmune, neuromuscular disease that causes weakness in the skeleta...
Myositis (Inflammatory Muscle Disease)
Myositis refers to any condition causing inflammation in muscles. The most common forms are polymyos...
Nail Disorders
Nail disorders include a wide range of conditions affecting the fingernails and toenails, including ...
Neck Pain
Neck pain is a very common complaint that can result from various causes, including poor posture, mu...
Nerve Entrapment Syndromes
Nerve entrapment syndrome occurs when a nerve is compressed or pinched by surrounding structures, le...
Osteoarthritis
Osteoarthritis (OA) is the most common form of arthritis, affecting millions of people worldwide. It...
Osteogenesis Imperfecta (Brittle Bone Disease)
Osteogenesis imperfecta (OI), also known as brittle bone disease, is a group of genetic disorders th...
Osteomalacia (Rickets in Adults)
Osteomalacia is a condition in which the bones become soft and weak due to a defect in the bone-buil...
Osteoporosis
Osteoporosis is a bone disease that occurs when the body loses too much bone, makes too little bone,...
Paget's Disease of Bone
Paget's disease of bone is a chronic disease that causes bones to grow larger and weaker than normal...
Patellofemoral Pain Syndrome
Patellofemoral pain syndrome (PFPS) is a broad term used to describe pain in the front of the knee a...
Plantar Fasciitis
Plantar fasciitis is one of the most common causes of heel pain. It involves inflammation of a thick...
Polymyalgia Rheumatica
Polymyalgia rheumatica is an inflammatory disorder that causes muscle pain and stiffness, especially...
Polymyositis
Polymyositis is a rare autoimmune disease that causes muscle weakness and inflammation, primarily af...
Polymyositis and Dermatomyositis Overview
Polymyositis and dermatomyositis are two closely related inflammatory muscle diseases (myopathies) i...
Psoriasis
Psoriasis is a chronic, autoimmune skin disease that speeds up the skin cell life cycle, causing cel...
Psoriatic Arthritis
Psoriatic arthritis is a form of arthritis that affects some people who have psoriasis — a condition...
Raynaud's Disease (Primary Raynaud's)
Raynaud's disease (primary Raynaud's phenomenon) refers to episodes of reduced blood flow to the fin...
Raynaud's Phenomenon
Raynaud's phenomenon is a condition that causes some areas of the body — such as fingers and toes — ...
Reactive Arthritis
Reactive arthritis is joint pain and swelling triggered by an infection in another part of the body,...
Rheumatoid Arthritis
Rheumatoid arthritis (RA) is a chronic inflammatory disorder that can affect more than just the join...
Rotator Cuff Injuries
The rotator cuff is a group of four muscles and their tendons that stabilize the shoulder joint and ...
Scleroderma (Systemic Sclerosis)
Scleroderma, also known as systemic sclerosis, is a group of rare diseases that involve the hardenin...
Scoliosis
Scoliosis is a sideways curvature of the spine that occurs most often during the growth spurt just b...
Shin Splints (Medial Tibial Stress Syndrome)
Shin splints (medial tibial stress syndrome) refers to pain along the inner edge of the shinbone (ti...
Sjögren's Syndrome
Sjögren's syndrome is a disorder of the immune system identified by its two most common symptoms — d...
Sports Injuries
Sports injuries are injuries that occur during athletic activities or exercise. They can result from...
Sprains and Strains
A sprain is a stretching or tearing of ligaments (the tough bands of fibrous tissue that connect bon...
Still's Disease (Adult-Onset Still's Disease)
Adult-onset Still's disease (AOSD) is a rare form of inflammatory arthritis that features high fever...
Stress Fractures
Stress fractures are tiny cracks in a bone caused by repetitive force or overuse, often from jumping...
Systemic Lupus Erythematosus (SLE)
Systemic lupus erythematosus (SLE) is the most common and severe form of lupus. It is a chronic auto...
Tendinitis
Tendinitis is an inflammation or irritation of a tendon — any one of the thick fibrous cords that at...
Tendinopathy
Tendinopathy is a broad term encompassing painful conditions occurring in and around tendons in resp...
Tendon and Ligament Injuries
Tendons connect muscles to bones, while ligaments connect bones to other bones. Both structures can ...
Thoracic Outlet Syndrome (TOS)
Thoracic outlet syndrome (TOS) is a group of disorders that occur when the blood vessels or nerves i...
Trigger Finger (Stenosing Tenosynovitis)
Trigger finger (stenosing tenosynovitis) is a condition in which one of the fingers gets stuck in a ...
Granulomatosis with Polyangiitis (Wegener's)
Granulomatosis with polyangiitis (GPA), formerly called Wegener's granulomatosis, is a rare disorder...
Wrist Problems and Injuries
Wrist problems include a range of injuries and conditions affecting the bones, tendons, ligaments, a...
Triple X Syndrome
Triple X syndrome (47,XXX) is a chromosomal condition in females caused by an extra X chromosome. Ma...
Xanthelasma
Xanthelasma appears as yellowish cholesterol-rich plaques around the eyelids. It is usually benign b...
Xeroderma Pigmentosum
Xeroderma pigmentosum is a rare inherited disorder in which the skin has extreme sensitivity to ultr...
Xerophthalmia
Xerophthalmia is an eye condition caused by vitamin A deficiency, leading to dryness of the conjunct...
XYY Syndrome
XYY syndrome is a chromosomal condition in males caused by an extra Y chromosome (47,XYY). Many indi...
Yaws
Yaws is a chronic bacterial infection caused by Treponema pallidum pertenue, primarily affecting ski...
Yellow Fever
Yellow fever is a viral hemorrhagic disease transmitted by infected mosquitoes in tropical regions o...
Yellow Nail Syndrome
Yellow nail syndrome is a rare disorder characterized by yellow thickened nails, lymphedema, and res...
Zellweger Syndrome
Zellweger syndrome is a severe peroxisome biogenesis disorder present from birth, affecting multiple...
Zenkers Diverticulum
Zenker’s diverticulum is an outpouching of the upper esophagus that can cause swallowing problems an...
Zika Virus Infection
Zika virus infection is a mosquito-borne viral illness. Most cases are mild, but infection during pr...
Zollinger-Ellison Syndrome
Zollinger-Ellison syndrome is a condition in which gastrin-secreting tumors (gastrinomas) cause exce...
Zoonotic Diseases
Zoonotic diseases are infections transmitted from animals to humans through direct contact, vectors,...
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