Viral skin rashes (also known as viral exanthems) can cause itching, irritation, and pain — and possibly symptoms like fever or fatigue. Unlike allergic rashes, which happen when your immune system ...

Also known as pigmented purpuric dermatoses, benign pigmented purpura (BPP) include a spectrum of disorders characterized clinically by a purpura that morphologically appears to have distinct forms ...

Sciatica can cause knee pain and pain anywhere else along the sciatic nerve, due to compression, damage, or nerve irritation. Treatment includes medications and lifestyle changes. The sciatic nerve ...

The knees and back work together to support movements like walking or playing tennis. When one of these areas becomes painful, it may place strain on the other. Injuries, poor posture, or arthritis ...

Purpura are small spots caused by the leaking of blood from blood vessels near the surface of your skin. A purpuric rash is an area of your skin covered in purpura. These spots may appear purplish red ...

Picture this: You’re lying in bed, *just* about to fall asleep, when your leg starts to cramp. The contractions, the twisting, the spasms, ugh! Naturally, you start to wonder, what causes leg cramps ...

Leukocytoclastic vasculitis is characterized by inflammation directed at small blood vessels in the skin. The process is mediated by neutrophils. Histologically, leukocytoclasis (i.e., destruction of ...