L40-L45: Papulosquamous disorders

L44: Other papulosquamous disorders

The group of conditions mentioned under "Other papulosquamous disorders" (L44) in the ICD-10 WHO classification involves skin diseases characterized by both papules and scales. Papules are small, raised bumps on the skin surface, while scales are dry, rough patches. These conditions typically develop when the life cycle of skin cells is disrupted, leading to rapid overproduction of cells or their shedding. Common symptoms include red, inflamed skin covered with silvery scales, itching, and discomfort. As the condition progresses, it may lead to thickening, redness, and roughness of the skin with visible scaling. Papulosquamous disorders can be triggered by various factors including genetics, immune system problems, or environmental triggers. The conditions primarily affect the skin but can also influence a person's quality of life due to cosmetic concerns and, in some cases, associated physical discomfort.