The build up to an attack can sometimes catch us off-guard,  we recommend you have an "Emergency Kit" on you at all times, so that wherever you may be at the time, you can immdiately take action and try to stop the attack before it starts or at the very least curb the severity until you are able to get medical help.
This list has been put together by one of the Founders of The South African Pophyria Foundation during years of conducting extensive research and this has been found to be highly beneficial.