Guide to Acronyms/Glossary

Aquagenic Urticaria: hives caused by water,  no matter the temperature

"Bite-proof" - the ability to eat a bite of your allergen, for example, cross contaminated foods or in restaurants without concern but not being able to eat the actual food.

Cholinergic Urticaria: hives caused by a higher body temperature, from stress, hot water, exercise, even sweating

Chronic Idiopathic Urticaria (CU) - hives which last for more than six weeks for which no cause can be found

Cold urticaria: hives cause by low temperatures

Dermographism: appearance of hives caused by scratching or firm stroking of the skin

EoE (or EE): Eosinophilic Esophagitis

MCAS: Mast Cell Activation Syndrome

OIT: Oral Immununtherapy 

Oral Food Challenge (OFC): a challenge test for determining food allergies where the patient eats increasingly large amounts of the allergen while being monitored for a reaction

Prostglandin D2: Prostglandin D2 is released by mast cells. It can be measured in the urine and is more stable/longer lasting than tryptase, making it perhaps a more accurate markers. The urine needs to be collected over 24 hours and refrigerated. NSAIDS can affect the results.

Solar Urticaria: Hives caused by the sun

TCM: Traditional Chinese Medicine

Tryptase: After anaphylaxsis, mast cells release tryptase. It can be measured in the blood for about 30-60 minutes after anaplylaxsis. Tryptase levels may also be increased in those who have Mastocytosis or Mast Cell Activation Syndrome.

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