What causes a blister?

Blisters are small, fluid-filled sacs that form on the skin. They are usually caused by friction, heat, or chemical burns.

Friction blisters are the most common type of blister. They occur when two surfaces rub against each other, causing the skin to separate. This can happen when you wear shoes that are too tight, when you work with your hands a lot, or when you play sports.

Heat blisters occur when the skin is exposed to high temperatures. This can happen when you get sunburn, when you touch a hot object, or when you get caught in a fire.

Chemical blisters occur when the skin comes into contact with harsh chemicals. This can happen when you clean with bleach or ammonia, when you work with solvents, or when you get poison ivy.

Blisters can also be caused by medical conditions, such as chickenpox, shingles, and bullous pemphigoid.

Symptoms of a blister

Blisters can vary in size and appearance. They are typically round or oval, and they can be filled with clear fluid, blood, or pus. Blisters can also be painful, tender, and itchy.

Treatment for blisters

Most blisters will heal on their own within a few days. However, there are some things you can do to help speed up the healing process:

* Do not pop the blister. This can increase the risk of infection.

* Keep the blister clean and dry. You can do this by applying a bandage or covering the blister with a piece of gauze.

* Apply a cold compress to the blister. This can help to reduce pain and swelling.

* Take over-the-counter pain relievers, such as ibuprofen or acetaminophen. These can help to relieve pain and inflammation.

If the blister is large, painful, or infected, you may need to see a doctor. The doctor may need to drain the blister or prescribe antibiotics.

Preventing blisters

There are a few things you can do to help prevent blisters:

* Wear shoes that fit well. Make sure your shoes are not too tight or too loose.

* Wear gloves when you work with your hands. This can help to protect your skin from friction and chemicals.

* Use a sunscreen with a high SPF when you are outdoors. This can help to protect your skin from sunburn.

* Avoid contact with harsh chemicals. If you do come into contact with harsh chemicals, rinse your skin with water immediately.

By following these tips, you can help to prevent blisters and keep your skin healthy.