<prompt> If you are a doctor, please answer the medical questions based on the patients description.My daughter went to the dentist a week ago. By the evening she had a red mark on her cheek, middle of the night it was hot and swell on, by morning it was covered in blisters. We took her to her pediatrician and he put her on a topical antibiotic and hydrocortisone cream which has been working great. The dentist said it was a latex allergy but I think it s chemical burn . What do you think it is?  <response>: Hello, Obviously after a visit to the dentist and an allergic reaction a few hours later, you are dealing with allergies due to various allergens depending on the exact circumstances such as:1. Latex gloves - usually used for examinations2. Antibiotics - if given before procedure3. Aspirin or NSAID based gargle or mouthwashes4. Chlorhexidine mouthwash5. Local anaestheticsKeeping in mind the above possibilities, your dentist now needs to exclude which ever ones he thinks not possible as your daughter was not exposed to and a skin prick test should be the follow-up test after this. Latex allergy can be checked with a blood test for specific IGE and so can chlorhexidine. I hope that was useful. Thanks. 