Histamine intolerance symptoms often seem similar to food allergy.

Antihistamine medications can provide temporary relief, but in the long term, they may do more harm than good.

Consuming large amounts of histamine can cause ‘scombroid’ poisoning, a painful and acutely distressing condition that can sometimes be fatal.

Excessive levels of histamine can also cause anaphylaxis, the most serious and immediately life-threatening form of response.

Histamine intolerance symptoms can include:

itching skin

itching scalp

sneezing

joint pain

inflammation

sleep disorders

irritability

anxiety

bowel disease

diarrhea

flatulence

stomach pain

heartburn

acid reflux

nausea

bloating and other digestive problems

painful periods (women)

eczema

psoriasis

tissue swelling

urticaria (hives)

sinusitis

runny nose

puffy eyes

hay fever

asthma

breathing difficulties

tension headaches

migraines

fuzzy thinking

dizziness

irregular heartbeat

sudden drops in blood pressure

faintness or flushing