Understanding Blisters -- Symptoms
What Are the Symptoms of a Blister?
A blister is a bubble of skin filled with clear fluid, ranging from pinpoint size to more than an inch in diameter. They are different than pustules, which contain thicker, yellow-white material.
Depending on the cause, blistering may be accompanied by pain, redness, or itching.
Call Your Doctor About a Blister If:
The blister was caused by contact with a chemical -- or a known disease.