I have noticed many people in the forums suffering with cholinergic urticaria have claimed to be very athletic/ sporty. I was wondering if anyone would say they use antiperspirants quite heavily. I know I certainly did. I would use it all over my chest, arms, neck and sometimes even face. I perceived it would keep me cool and less sweaty in stressful situations at school. It did the opposite.
I have had this problem for half a year now a only just deduced the cause may be the antiperspirant use. Wherever I sprayed it the rash would appear. Maybe it blocked in too much sweat and clogged pores, or caused some sort of allergic reaction. However, for a week I stopped using antiperspirants entirely and gradually the rash has disappeared. I haven’t had an outbreak in a couple of weeks now, and even stopped taking antihistamines entirely.
I know this won’t help everyone, and there are definitely other causes, but please comment if this has worked for you, or you have had a similar experience.