Will I know that I have mastocytosis before I have an anaphylactic reaction? 

You might not know that you have mastocytosis before an anaphylactic episode. Symptoms of mastocytosis can be varied and non-specific, such as skin rashes, flushing, or abdominal pain. Following an acute anaphylactic episode, we recommend making an appointment with one of our allergists to help with a diagnosis and to determine any underlying cause, such as mastocytosis. 

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