a histamine reaction to pressure
Histamine intolerance results from a disequilibrium of accumulated histamine and the capacity for histamine degradation. The main enzyme for metabolism of ingested histamine is diamine oxidase (DAO) (1-5). An impaired histamine degradation based on a reduced DAO activity and the resulting excess of histamine may cause numerous symptoms mimicking an allergic reaction. Increased histamine tolerance affords much greater flexibility and range with diet. People whose immune systems are on high alert, will be more likely to be ultra sensitive to exogenous histamine in the diet. They will need to be much more restrictive and careful, which in turn leads to even more stress. During or immediately after the ingestion of histamine-rich food or alcohol, rhinorrea or nasal obstruction may occur in patients with histamine intolerance; in extreme cases, asthma attacks also may occur. Reduced HNMT activity has been shown for patients with food allergy (70) and asthma bronchiale (71). Histamine is an organic nitrogenous compound involved in local immune responses as well as regulating physiological function in the gut and acting as a neurotransmitter for uterus. Histamine is involved in the inflammatory response and has a central role as a mediator of pruritus. As part of an immune response to foreign pathogens, histamine is produced by basophils and by mast cells found in nearby connective tissues. Histamine, which is a neurotransmitter becomes active and redistributes the water throughout the body. The histamine will go in order of circulatory priority and distribute the water first to the brain, lungs, liver, kidneys, and glands. Then, water will be sent to the muscles, bones and skin. slide 1 of 6. Histamine is a chemical in the body tissues that is produced by the breakdown of histidine. It is released in allergic reactions and causes widening of capillaries, decreased blood pressure, increased release of gastric juice and tightening of the muscles of the bronchial tubes and the uterus. Histamine intolerance depends on many factors including intestinal health, genetics, medication, diet, environment, and perhaps most importantly, emotional and spiritual well being. It is widely recognized that the degree to which we are histamine intolerant is greatly influenced by our level of emotional distress. High Blood Pressure and Histamine. Blood pressure is the force of your blood pushing against the walls of your arteries. Each time your heart beats, it pumps blood into the arteries. Your blood pressure is highest when your heart beats, pumping the blood. This is called systolic pressure. THINK YOU MIGHT HAVE A HISTAMINE DISORDER? Histamine Intolerance (HIT), Histaminosis, Mast Cell Activation Disorder (MCAD, MCAS, MCA), Mastocytosis, Systemic Mastocytosis are histamine disorders. Other conditions with a histamine/mast cell element are: Multiple Sclerosis, Fibromyalgia, Cancer, Narcolepsy, IBS, Crohn’s, Parkinson’s, Alzheimer’s, heart disease and migraines. Is Histamine relevant in food allergy and food intolerance? Amanda Geary, founder of the Food and Mood Project, has been investigating the role of the naturally occurring neurotransmitter, histamine, in food allergy, food intolerance and mood control. Histamine-containing foods can contribute to high histamine levels in the body.
Histamine  is released in allergic reactions and decreased blood pressure.