I just received this email from a lady who runs this mast cell charity in the UK about a teenager experiencing anaphylaxis after masturbation and erections, I thought you may be interested or have some insights, I'm not really sure what to reply as I thought POIS didn't usually cause anaphylaxisDear ****,I've just had an email from a doctor who has a teenage patient who is experiencing anaphylaxis after masturbation and indeed even after erections during sleep. Needless to say, this has been extraordinarily distressing to this boy. Any suggestions you have for information for the doctor would be very welcome, and suggestions for the family as well about first steps consider and sources that they could pursue to help him know he's not alone and to help them think about how to help him emotionally as well as practically.Many thanks in advance,******** ******TrusteeThe UK Mastocytosis Support Group