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Q. Can food allergy cause stomach cramps, skin rashes, and white coated tongue?

Answered by
Dr. Penchala Prasad Kandikattu
and medically reviewed by Dr. Vinodhini. J
This is a premium question & answer published on Aug 18, 2020 and last reviewed on: Sep 15, 2020

Hi doctor,

I have a question regarding food intolerance/allergies. I have never had a food allergy, as far as I know. However, in May, I experienced severe tooth pain, and a fever right after that. It was an infection in my tooth but I got that cleared from the dentist. A few days later, I experienced tongue tingling and a white coating. Sometimes the coating would be yellow. Before all of this though, I had stomach cramps every morning and I always put it down to my anxiety. My tongue tingling and raised papillae has never left since, and it has been three months. I struggle with tingling, soreness and dry mouth every day for at least 70% of the day.

I noticed I may have a food allergy after I started developing a rash a few weeks ago, sometimes my skin would be really itchy, and I would have no rash also. I also suffer with loose stool, sometimes with mucus, this has been ongoing for about five months, I also have severe brain fog and fatigue sometimes. I am 23 years old and overweight but not obese. I rarely eat fruits and vegetables and I eat a lot of rice, noodles, meats, bread, etc. Could it be a food allergy, or an intolerance? I would like to investigate this more before I visit a specialist.

Dr. Penchala Prasad Kandikattu

General Medicine Internal Medicine


Welcome to

Toothache may can cause fever if infected. SIBO (small intestinal bacterial overgrowth) or enteric fever may cause coating over the tongue. Irritable bowel syndrome or malabsorption syndrome or food intolerance or obesity may also present like this.

Avoid fatty food, alcohol, cool drinks, and ice creams. Get done ultrasound abdomen to rule out fatty liver, complete blood picture, fasting lipid profile. Use capsule Creon 20k IU (Pancreatin minimicrosphere) twice a day after food. Use tablet Pantoprazole before breakfast for one week. If symptoms are not improved, please review with reports or consult with your physician he will examine and treat you accordingly.

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