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Rosacea Support Resource Pages

These pages hold in-progress web pages for the benefit of Rosacea Support Group members. Information provided herein is intended for informational purposes only and is not intended to replace medical advice offered by a physician or qualified healthcare provider. Feedback welcome to

Allergen & Pseudo-Allergen

Histamine, released from mast cells when these mast cells are stimulated by the recognition of an allergen or invading pathogen, initiates the response of vasodilation and leaking of neutrophils in the inflammatory response. Antihistamines can help to inhibit this response. There are two histamine receptors - H1 and H2 - that seem to play a role in inflammation:

See also: