Dyer had tried over-the-counter antihistamines before, but she had reacted to the drugs themselves, likely because of fillers contained in the pills. Another treatment involves medication that ...

Urticaria pigmentosa, also called maculopapular cutaneous mastocytosis, is a skin condition that causes spots on the skin and skin lesions. It stems from having too many mast cells in the skin, a type ...

Systemic mastocytosis is a rare health condition in which too many mast cells (a type of immune system cell) build up in the body, causing allergic reactions and other health issues. This disorder ...