MAST sindromi (Mastocytosis) is a condition characterized by an increase in mast cell numbers in the body, leading to various symptoms. The clinical course may include itching, redness, diarrhea, headache, hypotension, and even anaphylactic shock. EKG abnormalities such as disruptions in heart rhythm and prolonged QT interval may be observed. The main cause of the disease is considered to be excessive mast cell activity