According to the American College of Allergy Asthma and Immunology, nearly one in three U.S. adults report having a seasonal ...

mast cells respond by releasing stored substances, called mediators, from their granules in a process known as degranulation. These mediators, which include chemicals such as histamine ...

If a rash appears on your body and you have no idea where it came from, it can be quite scary. Here a doctor has shared what ...

A doctor has shed some light on why itchy rashes sometimes mysteriously appear on the body - and what you need to do ...

For many patients with diverse and seemingly unrelated symptoms, obtaining an accurate diagnosis can take years of specialist visits and inconclusive tests. Mast cell activation syndrome, a ...

Mast cells are filled with tiny packages, or granules, each brimming with histamine and other compounds that act as signals or activators of inflammatory pathways. When mast cells are activated ...

Medically reviewed by Corinne Savides Happel, MD Anaphylaxis is a life-threatening allergic reaction that can be triggered by exposure to many different substances (allergens). The most common ...

mast cells, eosinophils, neutrophils, macrophages, lymphocytes) and mediators (eg, histamine, eicosanoids, leukotrienes, cytokines) involved in inflammation. The pharmacologic effects of beta 2 ...