Prurigo nodularis: Overview Prurigo nodularis What is prurigo nodularis?This is a skin disease that usually begins with intensely itchy skin. Scratching and rubbing the itchy skin cause hard, itchy bumps to appear on the skin. Is it contagious? No Prurigo nodularis on a patient’s leg This

Hives: Overview Hives What are hives?This is a skin reaction that causes bumps, raised patches, or both to suddenly appear on the skin. The bumps and raised patches are often itchy and may look swollen. The medical name for hives is urticaria. Are hives contagious?No, you cannot get hives by

  Rash from poison ivy. Many people develop an itchy rash that causes lines or streaks that look like this. Poison ivy, oak and sumac: Overview Many people get a rash from poison ivy, poison oak, and poison sumac. This rash is caused by an oil found in the plants. This oil is called urushiol (you-ROO-shee-all).

Bedbugs: Overview Bedbugs are tiny insects that feed on human blood. They hide in dark places close to where humans sleep and usually crawl out to feed while people are fast asleep.   Bedbug bites: Most people who are bitten by bedbugs have welts that look like these shown above. Bedbugs can be