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Histamine is an organic nitrogenous compound involved in local immune responses communication, as well as regulating physiological functions in the gut and acting as a neurotransmitter for the brain, spinal cord, and uterus.
Infrequent adverse effects include urinary retention, palpitations, hypotension, headache, hallucination, psychosis and erectile dysfunction. [4] [6] [7] The newer, second-generation H 1-antihistamines are far more selective for peripheral histamine H 1-receptors and have a better tolerability profile compared to the first-generation agents ...
It is used in the treatment of itchiness, anxiety, insomnia, and nausea (including that due to motion sickness). [8] It is used either by mouth or injection into a muscle. [8] Hydroxyzine works by blocking the effects of histamine. [9] It is a first-generation antihistamine in the piperazine family of chemicals.
Migraines can be triggered by all sorts of things, and unfortunately, certain foods are big offenders. Wrap your head around these 12 foods known to cause headaches.
Can foods trigger migraines and headaches? Yes, foods and drinks are often triggers for migraines because the condition involves neuroinflammation, and what people eat can promote an inflammatory ...
Stopping smoking does not lead to improvement of the condition, and cluster headaches also occur in those who have never smoked (e.g., children); [1] it is thought unlikely that smoking is a cause. [1] People with cluster headaches may be predisposed to certain traits, including smoking or other lifestyle habits. [34]
An H 3 receptor antagonist is a type of antihistaminic drug used to block the action of histamine at H 3 receptors.. Unlike the H 1 and H 2 receptors which have primarily peripheral actions, but cause sedation if they are blocked in the brain, H 3 receptors are primarily found in the brain and are inhibitory autoreceptors located on histaminergic nerve terminals, which modulate the release of ...
Histamine intolerance is a presumed set of adverse reactions (such as flush, itching, rhinitis, etc.) to ingested histamine in food. The mainstream theory accepts that there may exist adverse reactions to ingested histamine, but does not recognize histamine intolerance as a separate medical condition that can be diagnosed. [1]