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Prurigo nodularis | Genetic and Rare Diseases Information ...

Prurigo nodularis (PN) is a skin disease that causes hard, itchy lumps to form on the skin. The itching can be intense, causing people to scratch themselves to the point of bleeding or pain.Scratching can cause more skin lesions to appear. The itching is worsened by heat, sweating, or irritation from clothing. In some cases, people with PN have a history of other diseases including eczema ...