They say it paves the way for new treatments to prevent itching, hives and other symptoms of skin conditions – such as eczema and rosacea – driven by mast cells.

Innate immune cells are white blood cells that mediate innate immunity and include basophils, dendritic cells, eosinophils, Langerhans cells, mast cells, monocytes and macrophages, neutrophils and ...

If the cells become overreactive, releasing too many mediators at the wrong time, a person can end up flushed, dizzy, wheezy, or exhausted. This is called mast cell activation syndrome, or MCAS.