5. Medications
Medications you take can cause blisters to form. If you’re allergic to certain medications, you should tell your doctor if are. For instance, if you have taken a similar drug in the past and it caused blisters, let your doctor know immediately. Sometimes you can take a medication for a long time without any side effects, but after taking it for a long time it may start to give you problems.
Keep a list of all of the medications you have taken in the past that you are allergic to. If you don’t keep track of medications that you are allergic to, when a doctor prescribes your new medication, it may be similar to the medication that you took in the past. Blisters can form anywhere on the body when you take medications that you’re allergic to. For instance, if they form in the mouth, it can cause swelling and make it difficult to eat.