Symptoms and Causes

Overview Trigger finger causes a finger to become stuck in a bent position. It may suddenly straighten with a snapping motion. This condition most commonly affects…

Overview Sun allergy refers to several conditions that create itchy skin rashes after exposure to sunlight or other UV radiation sources. The most common type is…

Overview Angelman syndrome results from a genetic change that affects development and function. This condition causes delays in development, speech problems, balance issues, intellectual disabilities, and…

Overview Hepatitis A affects the liver, causing inflammation and impacting liver function. This highly contagious virus typically spreads through: Most people recover fully from hepatitis A…

Overview Dry skin causes rough, itchy, flaky, or scaly patches that can appear anywhere on the body. This common condition affects people of all ages and…

Overview Tourette syndrome is a disorder characterized by repeated movements or unwanted sounds, called tics, that people cannot easily control. Common examples include frequent eye blinking,…

Overview Inflammatory breast cancer develops when cells in breast tissue grow abnormally and spread to lymphatic vessels in the skin. These cells can block the vessels,…

Overview Body dysmorphic disorder (BDD) is a mental health condition. People with BDD are preoccupied with perceived flaws in their physical appearance. These flaws are usually…

Overview Diaper rash appears as inflamed skin patches on the buttocks, thighs, and genital areas. This common skin condition primarily affects babies but can develop in…

What Is Roseola? Roseola is a common viral infection affecting young children, typically under age 2. This illness causes a high fever that lasts several days,…