The Spectrum of Mast Cell Activation Syndromes

• Urticaria 

• Flushing 

• Generalized pruritus 

• Angioedema 

• Nasal congestion 

• Nasal pruritus 

• Wheezing 

• Throat swelling 

• Headache 

• Hypotension, syncope and/or presyncope 

• Tachycardia 

• Abdominal cramping +/- pain 

• Chronic watery diarrhea