If I were allergic to Coca Cola and I happen to drink it. what could be my symptoms? from mild to Severe. and does Allergy symptoms come with just one symptom? Or multiple symptoms at once? and how fast do they react?. Sorry I just have a strong curiousity about Allergies

if you had an allergy then your symptoms could be as mild as a rash on to more serious symptoms like swelling of the throat, breathing difficulties, and death. the more serious reaction you have the more symptoms you are likely to manifest.

it's possible to have no reaction the first time you have something and then have a mild reaction the next time you have it and then have an even more severe reaction when you have it at a later time.

it's possible to have a severe reaction the first time you have something.

it's possible to use a product for years and then suddenly develop an allergy to it. (one of my aunt's has an allergy to shellfish which developed after eating shellfish her entire life. I've developed an allergy to an ingredient in cough medicine that I had used for years w/o problems)

I write on my hands alot with sharpie and markers. I just recently got a small bumpy red rash on the areas. it itches like crazy! what are the symptoms of ink poisoning and how do i get rid of it?