It will be good if there is another option:
Not sure; which means that he will not be counted towards the number of yes/no ONLY for this particular question. This is to prevent 'unsure' people to make the survey distorted.
We also need to try to guess any sign or symptoms that he is susceptible to Cholinergic Urticaria, for example:
Before the Cholinergic Urticaria start to appear:
1) Do you have prickling itch when eating certain spicy food?
2) Do you have 'skin writing' condition?
And to guess the time of the Cholinergic Urticaria outbreak;
1) Do you have any drastic change in the sweating pattern 1-4 months before getting your Cholinergic Urticaria? (Like you have been active in sports and stop abruptly , or in a hot climate then move to a cold climate?)
And to guess the Cholinergic Urticaria cure:
Which of the following have you done to try to cure/ lessen your Cholinergic Urticaria? (just answer the one that you have tried)
1) Intentionally induce your outbrake by exercising or going into a steam room regularly for at least 3 weeks?
Has it work?
2) Taking medications?
Has they work?
etc etc,
I hope the survey is categorized
I'll be happy to give more feedback
