Presentation varies from person to person. Some people have discrete attacks, which can last between 10 and 120 minutes while others are symptomatic almost constantly due to atmospheric humidity levels and/or sweating. Itching most frequently occurs on the legs, arms, chest, back, and abdomen, though it can also occur elsewhere. Itching on contact with water that also includes hives is known as<unk>  urticaria.
Aquagenic pruritus
Psychogenic pruritus
Uremic pruritus
Cholestatic pruritus
Hydroxyethyl starch-induced pruritus
Pathergy
Grocer's itch
Irritant diaper dermatitis