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in Allergies QA
What are the symptoms of high histamine levels?

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In more severe cases of histamine intolerance, you may experience: abdominal cramping. tissue swelling. high blood pressure. Symptoms of histamine intolerance headaches or migraines. nasal congestion or sinus issues. fatigue. hives. digestive issues. irregular menstrual cycle. nausea. vomiting.
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