Search Results 41-50 of 16196 for Histamine

  1. Mayo Clinic Q and A: Is it allergies or a sinus infection?

    This reaction happens when the immune system releases certain substances, such as histamine, into the bloodstream. This leads to allergy symptoms, which may ...

  2. Mayo Clinic Minute: Is it a cold or allergies?

    Pollen, mold spores and pet dander all can be triggers. "It's our reaction to that allergen that then triggers the release of histamine and other mediators that ...

  3. Allergies - Symptoms and causes - Mayo Clinic

    Coming into contact with the allergen causes an immune system reaction that can inflame the skin, sinuses, airways or digestive system. Allergic reactions vary ...

  4. Allergy shots - Mayo Clinic

    Each allergy shot contains a tiny amount of the substance or substances that trigger allergic reactions. These substances are called allergens. Allergy shots ...

  5. Carcinoid tumors - Symptoms and causes - Mayo Clinic

    Some hormones that are produced by neuroendocrine cells are histamine, insulin and serotonin. Risk factors. Factors that increase the risk of carcinoid ...

  6. Mayo Clinic Q and A: Testing for food allergies and sensitivities

    The allergy cell releases chemicals, namely histamine, that causes a reaction — typically within a few minutes. Though rare, there is the possibility of a ...

  7. Latex allergy - Symptoms and causes - Mayo Clinic

    The next time there is a latex exposure, these antibodies tell the immune system to release histamine and other chemicals into the bloodstream. This process ...

  8. Mast Cells in Eosinophilic Esophagitis - Mayo Clinic

    Histamine mediators, including serum tryptase and 24 hour urine beta-prostaglandin, N-methylhistamine, and leukotriene E4, will be obtained close to the ...

  9. Hydroxyzine (intramuscular route) - Side effects & uses - Mayo Clinic

    It works by preventing the effects of a substance called histamine, which is produced by the body. This medicine is also used to control anxiety withdrawal ...

  10. Mayo Clinic Q and A: OTC Allergy Medications May Not Be Best Treatment Option

    This blocks histamine — a key molecule in allergic inflammation — from binding to its receptor on the cells. If you choose a nonprescription antihistamine ...