So i've been diagnosed with cholinergic urticaria by me dermatologist. I previously went to a regular doctor and he gave me anti-histamines (alavert). The dermatologist prescribed me zyrtec. Well neither are working. I still get the hives/burning/ithcing very badly with even the slightest temp rise or stress moment. I have a follow-up appointment with the dermatologist in about 2 weeks, but i'm wondering if I should cancel that and just go to an allergist. After researching online i've seen that not many people have any luck with anti-histamines. Should I go to an allergist or stick with the dermatologist? I need to get this fixed or atleast dialed down a bit asap.