is a skin disease with excess mast cells causing itchy, flushing rashes.

is a rare skin cancer involving mucus-producing and squamous-type cells.

is a fungal skin infection that usually affects the outer layers.

is a skin infestation caused by fly larvae developing in tissue.

is a rare, aggressive skin cancer that often grows quickly.

is a rare skin cancer usually affecting the nipple or genital skin.

is a rare genetic condition causing sun-sensitive skin and severe bowel disease.

is a rare inflammatory disease affecting small- and medium-sized skin blood vessels.

is a group of rare disorders causing sunlight-triggered skin fragility and blistering.

is a benign skin condition that can resemble lymphoma.

is inflammation of tiny skin blood vessels causing rash and spots.

is a rare genetic disorder causing skin folds, dark patches, skull fusion.

is a rare connective tissue disorder causing loose skin; may affect organs.

is a rare genetic disorder affecting skin, lungs, digestion, and urinary tract.

is a rare genetic disorder causing loose skin and Marfan-like features.

is a rare birthmark disorder causing marbled skin and visible blood vessels.

is a medical emergency where cyanide blocks cells from using oxygen.

is a rare movement disorder caused by cyanide poisoning.

is a rare disorder with periodic drops in blood cells, causing infections.

is a rare blood disorder causing recurring dangerously low neutrophil levels.

is an allergic reaction to the chemotherapy drug cyclophosphamide.

is paralysis of the eye's focusing muscle, causing blurred near vision.

is an intestinal infection caused by the parasite Cyclospora.

is a chronic mood disorder causing milder highs and lows.