<s>[INST] I'm 38 years old. I was born with a VSD (heart murmur). Over the past 15 years I have developed allergies and sensitivities to most foods and scents (I never had that issue before). Lately I have developed sensitivity to heat. I read recently that all these symptoms among others, may be Adrenal Fatigue. But the issue I currently have is that I am due to visit the dentist. I am always concerned when I have to because I am afraid that I would have adverse effects. Once I had double vision in one eye after given the anesthetic. Other times my heart races. I have also felt extremely dizzy once. Do you have any kind of advice or precautions that I should take. [/INST] helloi have gone through your query.as you have gone through dental procedure for some no. of times.i don thnk you had allergic reaction from anesthesia.plz mention whether the teratment was under local or general anesthesia.local anesthesia(LA) generally used comes with epinephrine which can cause pounding in the chest and light-headedness.if that is the case then LA without epinephrine cn be given.Patients who present with a history of “allergy” to local anesthetics for them Injectable 1% diphenhydramine is a safe and effective method of LA.sometimes reactions result from increased sympathetic activity in response to fear, pain, or the sight of blood. This can cause light-headedness, fainting, and sometimes clonic limb jerking associated with a slow heart rate.according to your case you have to tell about all ur medical history to the dentist before any procedure.hope this ans helpsRegards Dr. shesh </s>