Hives, also known as urticaria, are raised, itchy welts on your skin that occur due to an allergen. The reaction is ...

Urticaria pigmentosa, also called maculopapular cutaneous mastocytosis, is a skin condition that causes spots on the skin and ...

Papular urticaria is a hypersensitivity to insect bites, often from mosquitoes, bedbugs, fleas, or mites. It’s especially common in toddlers and young children. Common symptoms are extremely red ...