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Lawrence B. Afrin, M.D.

Lawrence B. Afrin, M.D. Profile Photo

Dr. Afrin trained and practiced as an internist and hematologist/oncologist at the Medical University of South Carolina 1984-2014 and further practiced at the University of Minnesota 2014-2017, coming to focus his interests in mast cell disease since the mid-’00s. Since 2017, he has been practicing in New York and has been helping to develop a global network of clinicians and investigators for advancing care, research, and education in this area. He has published highly accessed articles about mast cell activation syndrome and a popular book in the field.

Jan. 29, 2026

Mast Cell Activation Syndrome: The Diagnosis Most Doctors Miss with D…

Mast Cell Activation Syndrome is one of the most misunderstood, and underrecognized, conditions in modern medicine. In this episode, Dr. Linda Bluestein is joined by Dr. Lawrence Afrin, one of the world’s leading experts on mast cell disease, to unpack why MCAS is so often missed, why tryptase alon…

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