A blister is a flesh-colored, fluid-filled bump on the skin. Blisters may be little larger than the head of a pin, or they may be several inches across.

They can occur on any part of the body, but are particularly common on the feet. A blister is a superficial injury to the skin that causes the epidermis (top layer of skin) to separate from the dermis (lower layer of skin). Fluid fills this pocket, causing it to swell into a bump.

Ill-fitting shoes are the cause of classic blisters. When the shoe rubs against part of the foot a blister can form. Blisters also can develop when the epidermis is burned-this includes sunburn.

Signs and Symptoms

Elevated, flesh-colored or pinkish bump that is filled with fluid

Tenderness at the site

Conventional Medical Treatment

While most blisters don't require medical attention, physicians are quick to tell people not to break the blister. It may be tempting, but breaking the blister can let bacteria enter the wound, resulting in an infection. A broken blister also takes longer to heal. Your best bet is to wash the area with soap and water, apply an antibiotic ointment, cover the wound with a bandage, and avoid applying any kind of pressure to the area until it heals. Most unbroken blisters heal within three to five days.

Complementary and Alternative Treatments

Aromatherapy

Essential oils of lavender, benzoin, and myrrh are helpful in drying and healing blisters, especially those on the feet.

Herbal Therapy

There are a number of topical herbal remedies that may help heal blisters. Aloe vera gel can be applied directly to the affected area. You also can use a calendula salve or a cold lavender compress. Or combine 15 drops lavender essential oil with 1 ounce vegetable oil; apply to the blister 3 times a day.

Herbal products are available in health food stores and in some pharmacies and supermarkets. Follow package for specific directions.

Homeopathy

Bathe broken blisters with Hypericum or lid Calendula lotion.

Traditional Chinese Medicine

Chinese Herbal Therapy Aloe vera can be used to remedy any discomfort caused by blisters, and many pre-made liniments can help speed recovery and lessen pain.