Blue rubber bleb nevus syndrome (BRBNS) is a rare blood vessel (vascular) disorder that affects the skin and internal organs of the body. Multiple distinctive skin lesions are usually characteristic of this disorder and are often present at birth ...

Tuberous sclerosis is a rare genetic multisystem disorder that is typically apparent shortly after birth. The disorder may be characterized by episodes of uncontrolled electrical activity in the brain (seizures); mental retardation; distinctive sk...

Gangrene facts Gangrene refers to dead or dying body tissue(s) that occur because of inadequate blood supply. There are two major types of gangrene, wet gangrene and dry gangrene. Dry gangrene can result from con...

Hemangioma is a benign (non-cancerous) tumor made up of a cluster of blood vessels. It is most commonly found in infants and young children, and usually appears as a red or purple mark on the skin. Hemangiomas can occur anywhere on the body, but a...

HIV/AIDS and the Eye is a term used to describe the effects of HIV/AIDS on the eyes. HIV/AIDS can cause a variety of eye problems, including inflammation of the eye, dry eye, and vision loss. HIV/AIDS can also increase the risk of developing certa...

The WAS-related disorders are a spectrum of conditions affecting the immune system that are caused by mutations in the WAS gene. These disorders include Wiskott-Aldrich syndrome, X-linked thrombocytopenia and X-linked congenital neutropenia. The W...

Congenital generalized fibromatosis (CGF) is a pediatric condition that is often now referred to as "infantile myofibromatosis" (IM). It is characterized by the formation of single or multiple noncancerous (benign) tumors that appear to be derived...

Granuloma annulare is a chronic degenerative skin disorder. The most common form is localized granuloma annulare, which is characterized by the presence of small, firm red or yellow colored bumps (nodules or papules) that appear arranged in a ring...

Lichen planus is a chronic inflammatory condition that affects the skin, mucous membranes, hair, and nails. It is characterized by the presence of itchy, flat-topped, purple or reddish bumps that may be covered with white scales. The exact cause o...

Lichen Planus is a rare, recurrent, itchy rash or area of inflammatory eruptions (lesions) of unknown origin characterized by shiny reddish-purple spots on the skin and gray-white ones in the mouth. The disorder may present as itchy spots on the w...

Lichen Planus is a rare, recurrent, itchy rash or area of inflammatory eruptions (lesions) of unknown origin characterized by shiny reddish-purple spots on the skin and gray-white ones in the mouth. The disorder may present as itchy spots on the w...

Flesh-eating bacteria (necrotizing fasciitis) is a rare infection of the skin and tissues below it. It can be deadly if not treated quickly. Necrotizing fasciitis spreads quickly and aggressively in an infected person. It causes tissue dea...

Oral Kaposi sarcoma is a type of cancer that affects the lining of the mouth and throat. It is caused by a virus called human herpesvirus 8 (HHV-8) and is most commonly seen in individuals with weakened immune systems, such as those with HIV/AIDS....

Stretch mark facts The medical name for stretch marks is striae distensae. Stretch marks are very common. Stretch marks rarely are a sign of a significant medical problem. Stretch marks are generally pa...