my allergies

I just gave a list of my allergy medicines to my obgyne. She was shocked I am allergic to the anesthesia that she commonly use for her patients. Benzocaine, Lidocaine, Tetracaine. I recall I am also allergic to Sulfasalazine.

Initially, I was playing Sherlock Holmes. I told my immunologist that maybe I am not allergic to lidocaine because it does not contain benzoate. Benzocaine, tetracaine and sulfasalazine all contains benzoate. Ehem,.. But I am not allergic to benzoate because it is widely used as food preservative. My immunologist just commented that I need to look at its three dimensional structure. If they are IgE mediated, I will also develop allergy from lidocaine even if it doesn't contain benzoate.

I got scared of the fate of my friend she had her preterm labor. I heard she used magnesium sulfate as the first line of defense for contraction. Ouch... sulfa... sulfate? Ehem... google google... I need to brush up my biochemistry. I am not allergic to celecoxib, therefore I am not allergic to the entire class of sulfonamide. Correct? Having a specific drug allergy means it is not IgE mediated. It is triggered by other immune elements.

My brain was drained after my consult. Hehe, I will discuss those medicines again with my immunologist/allergologist. If my hunch is correct, I am allergic to aniline and azo. I remember I have tried to use an unwashed new cloth. I got allergy from its dye or its preservative. I am also allergic to folmaldehyde, hair dye and detergents, Wah! long list ya.

I guess my new hunch is more logical, benzocaine, tetracaine, lidocaine all contains aniline or aminobenzene. while sulfonamide contains azo.

I suddenly has the fear of anesthesia. Can't I just use propofol and fentanyl? I am scared of allegy. Haha, this reminds me of a hyperventillation once upon a time.