Seborrheic Keratosis is a skin disorder usually characterized by discolored lesions that appear to be "stuck on" the skin surface. Warts may appear and skin is often oily or greasy. These skin lesions are sometimes mistaken for cancerous growths a...

An actinic keratosis (ak-TIN-ik ker-uh-TOE-sis) is a rough, scaly patch on your skin that develops from years of exposure to the sun. It's most commonly found on your face, lips, ears, back of your hands, forearms, scalp or neck. Also know...

Amelogenesis Imperfecta is a rare genetic disorder that affects the development of tooth enamel. People with this condition have abnormal enamel formation, which can result in teeth that are discolored, pitted, or prone to rapid wear and breakage....

What is aortic stenosis? Aortic stenosis is abnormal narrowing of the aortic valve. A number of conditions cause disease resulting in narrowing of the aortic valve. When the degree of narrowing becomes significant enough to impede the flow...

Aortic stenosis is abnormal narrowing of the aortic valve. A number of conditions cause disease resulting in narrowing of the aortic valve. When the degree of narrowing becomes significant enough to impede the flow of blood from the left ventricle...

A chipped tooth is a common dental injury that occurs when a portion of the tooth breaks off. This can happen due to various reasons such as biting down on a hard object, trauma to the face, or tooth decay weakening the tooth structure. A chipped ...

Adenoid cystic carcinoma (ACC) is a relatively rare form of cancer that most commonly develops in the salivary glands or other regions of the head and neck. In some cases, ACC may arise in other primary sites, such as the skin; the breast; the nec...

Keratosis follicularis, also known as Darier disease, is a rare, genetic skin disorder. Affected individuals develop skin lesions that consist of thickened, rough bumps (papules) or plaques that may also be greasy or have a brown or yellow crust. ...

Keratosis follicularis, also known as Darier disease, is a rare, genetic skin disorder. Affected individuals develop skin lesions that consist of thickened, rough bumps (papules) or plaques that may also be greasy or have a brown or yellow crust. ...

Dry skin facts Dry skin is a very common condition that causes small fine flakes and dry patches. Itching is one of the most common symptoms of dry skin. Scratching may be hard to resist. Dry skin is mo...

Keratosis follicularis, also known as Darier disease, is a rare, genetic skin disorder. Affected individuals develop skin lesions that consist of thickened, rough bumps (papules) or plaques that may also be greasy or have a brown or yellow crust. ...

Enamel hypoplasia is a developmental defect of the teeth in which the enamel does not form properly, resulting in thin or missing enamel on the teeth. This can lead to increased sensitivity, discoloration, and an increased risk of tooth decay. Ena...

Atrioventricular septal defect (ASVD) is a general term for a group of rare heart defects that are present at birth (congenital). Infants with ASVDs have improperly developed atrial and ventricular septa and adjoining valves. The norma...

Giant Papillary Conjunctivitis (GPC) is an inflammatory condition of the eye that affects the inner surface of the eyelids. It is caused by an allergic reaction to contact lenses, foreign bodies, or other irritants. Symptoms include itching, redne...

Erythrokeratodermia with ataxia (EKDA) is a hereditary disorder of the skin and nervous system (neurocutaneous syndrome) characterized by groups of hard, red plaques that develop during infancy and childhood. When these skin lesions heal, the diso...

Keratosis follicularis spinulosa decalvans (KFSD) is a rare, inherited, skin disorder that affects men predominately and is characterized by hardening of the skin (keratosis) in several parts of the body. Most frequently, the face, neck, and forea...

X-linked ichthyosis is a genetic skin disorder that affects males. It is an inborn error of metabolism characterized by a deficiency of the enzyme steroid sulfatase. Under normal conditions, this enzyme breaks down (metabolizes) cholesterol sulfat...

Impetigo facts Impetigo is a bacterial infection of the surface of the skin. Impetigo is more common in children than in adults. The two types of impetigo are non-bullous and bullous impetigo. Impetigo ...

Keratitis ichthyosis deafness (KID) syndrome is a rare, genetic, multi-system disorder. It is characterized by defects of the surface of the corneas (keratitis), red, rough thickened plaques of skin (erythrokeratoderma) and sensorineural deafness ...

Seborrheic Keratosis is a skin disorder usually characterized by discolored lesions that appear to be "stuck on" the skin surface. Warts may appear and skin is often oily or greasy. These skin lesions are sometimes mistaken for cancerous growths a...

Antley-Bixler Syndrome is a rare genetic disorder that is primarily characterized by distinctive malformations of the head and facial (craniofacial) area and additional skeletal abnormalities. For example, the disorder is typically associated with...

Oral leukoplakia is a condition characterized by thick, white patches or plaques that form on the inside of the mouth, typically on the cheeks, gums, or tongue. These patches cannot be scraped off and may be rough or slightly raised. ...

Osteoarthritis facts Osteoarthritis is a joint inflammation that results from cartilage degeneration. Osteoarthritis can be caused by aging, heredity, and injury from trauma or disease. The most common symptom of...

Osteoarthritis facts Osteoarthritis is a joint inflammation that results from cartilage degeneration. Osteoarthritis can be caused by aging, heredity, and injury from trauma or disease. The most common symptom of...

Thrombotic thrombocytopenia purpura (TTP) is a rare, serious blood disease. Major symptoms may include a severe decrease in the number of blood platelets (thrombocytopenia), abnormal destruction of red blood cells (hemolytic anemia), and disturban...

Scabies is an itchy, highly contagious skin disease caused by an infestation by the itch mite Sarcoptes scabiei. Direct skin-to-skin contact is the mode of transmission. A severe and relentless itch is the predominant symp...

Squamous cell carcinoma (SCC) is the second most common skin cancer with between 200,000 and 250,000 cases reported each year. It is a malignant cancer that usually develops from the epidermis and/or the mucous lining of the body cavities (epithel...