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 ...

Urticaria affects 10% to 25% of the population at some point in their life (Henderson, Fleischer, & Feldman, 2000). It is characterized by short-lived swellings of the skin, mouth, and genitalia ...

In some cases, skin swelling may occur. Flea bites sometimes cause papular urticaria, a chronic (long-lasting) inflammatory disease that presents as a rash with small, raised, red, and itchy lesions.

The differential diagnosis includes juvenile xanthogranuloma, verruca plana, milia and papular urticaria. Lesions usually resolve spontaneously, but this process may take years, with more ...