A blister is a raised part of the skin that fills with clear fluid. Blisters usually develop to protect injured skin and help it heal.
Blisters have several potential causes, including skin friction, viral infections, and exposure to certain chemicals.
This article discusses the causes of itchy, clear fluid-filled bumps. It also examines the associated symptoms and treatments and explains when to contact a doctor.
Itchy bumps containing clear liquid are typically blisters. They may develop on areas of the body where rubbing or friction typically occurs, such as the hands or feet.
The fluid in blisters may contain serum, plasma, or pus. If there is an infection, it may also include blood.
Blisters may be:
- bubbly and a different color than the surrounding skin
- skin colored
- itchy
- painful
Scratching or picking at blisters could rupture the protective covering over the damaged skin, leading to discomfort or infection. If the blister stays intact, the skin underneath may heal more quickly.
Depending on the cause of the bumps, other symptoms may occur alongside them, such as fever.
Some blisters are painful, and they can be itchy. Although most blisters heal without treatment, severe blisters may take longer to heal or require treatment.
A person should avoid popping blisters, which can increase the chance of infection. Covering the blister with a Band-Aid can provide additional protection while it heals.
