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Related to blister: blood blister, water blister


a vesicle, especially a bulla.
blood blister a vesicle having bloody contents, as may be caused by a pinch or bruise.
fever b's herpes febrilis.
water blister one with clear watery contents.


1. A fluid-filled, thin-walled structure under the epidermis or within the epidermis (subepidermal or intradermal).
2. To form a blister with heat or some other vesiculating agent.


/blis·ter/ (blis´ter) a vesicle, especially a bulla.
blood blister  a vesicle having bloody contents, as may be caused by a pinch or bruise.
fever blister  see herpes simplex.
water blister  one with clear watery contents.


a. A local swelling of the skin that contains watery fluid and is caused by burning or irritation.
b. A similar swelling on a plant.
v. blis·tered, blis·tering, blis·ters
To cause a blister to form on.
To break out in or as if in blisters.

blis′ter·y adj.


a vesicle or bulla of the skin, containing watery matter or serum.


A saccular skin vesicle filled with serous fluid, which separates the epidermis and/or dermis, and which may be linked to shearing forces caused by trauma, burn, or a vesicatory agent; a collection of serous fluid.


 A skin vesicle filled with serous fluid, caused by burns, trauma, or by a vesicatory; a collection of serous fluid


1. A fluid-filled thin-walled structure under the epidermis or within the epidermis (subepidermal or intradermal).
2. To form a blister with heat or some other vesiculating agent.


1. A collection of fluid below or within the epidermis.
2. To form a blister.


The area should be cleansed with mild soap and a protective dressing applied. Unless a blister is painful or interferes with function because of its size, it should not be punctured. If puncturing is required, it should be done aseptically, with the skin left in place. A sterile pressure bandage should then be applied.


If infection develops, treatment is the same as for any other wound, including tetanus prophylaxis or booster as required.
Enlarge picture
BLOOD BLISTER: On the sole of the foot after cryotherapy for a plantar wart

blood blister

A small subcutaneous or intracutaneous extravasation of blood resulting from the rupture of blood vessels. See: illustration


A firm dressing should be applied with moderate pressure to prevent extravasation and hasten absorption of blood. In some cases it is desirable to puncture the wound aseptically and aspirate the contents.

calendar blister

A blister pack in which each dose of a medication is labeled with a specific day of the week (e.g., M, T, W) or of the month (1st, 2nd, 3rd) to encourage and assist with daily compliance with medication dosing.

fever blister

A vesicular rash usually appearing on the lips or mucous membrane of the mouth during another infectious illness. The rash is caused by herpes simplex virus.
See: cold sore

fly blister

A blister produced by application of cantharides to the skin.

friction blister

An inflamed blister that forms beneath the epidermis after vigorous or repeated rubbing of the skin, e.g., on the toes or heels during sports activities.


A fluid-filled swelling occurring within or just under the skin, usually as a result of heat injury or unaccustomed friction. The fluid is serum from the blood and is usually sterile.


A fluid-filled, thin-walled structure under the epidermis or within the epidermis (subepidermal or intradermal).


1. a vesicle, especially a bulla, a lesion of the skin.
2. a paste containing an irritant such as cantharides used to plaster onto a horse's leg to produce counterirritation and encourage healing of a strained tendon or ligament.

blister beetle
blood blister
a vesicle having bloody contents, as may be caused by a pinch or bruise.
blister fly
internal blister

Patient discussion about blister

Q. What's the best treatment for a blister?

A. use a clean needle and poke a small hole right at the base, between normal skin and the blister. Push the blister down, allow it to drain completely and put a bandaid over it; don't ever rip off blister skin allow it to fall off or reattach naturally.

Q. What are the causes of viral blisters on the skin? For a few months now I've been having these hard viral blisters on my fingers. The only way to get rid of them is with freezed carbon. It does go away with that treatment- after a few weeks but then a new one appears. How can I prevent it from "attacking" again??

A. These viral blisters you are describing are caused by HPV (papilloma virus), and are very hard to get rid of without treatment with freezed carbon. Many of us have the virus but not everyone gets the actual infection. There is not a proved way of preventing from it to happen again after treatment, unfortunately..

More discussions about blister
References in periodicals archive ?
4 Acetyl Salicylic Acid Dispersible Tablet 75mg 1x10x10 Packing specification: AL STRIP/AL BLISTER | Specification: IP/BP/USP | Strength: 75 MG
Identical sealing layer as standard blister lidding foil
By integrating precise desiccant and/or gas-absorption into the individual blister with adhesive-free technology, products are protected against moisture, oxygen, and odors," says Craig Voellmicke, vice president, business development, CSP Technologies.
Blisters are rarely serious unless they burst and become infected or if they're very large and painful, in which case, consult a doctor.
According to the company, cross-permeation also can be influenced by the blister's design; often, correcting this sort of systemic flaw involves adjusting the sealing area or eliminating blister perforations altogether.
Depending on the form factor and release requirements, a wide range of materials can be processed to create "frangible" blister seal reservoirs with differential weld strengths designed and engineered to either be permanent or break, distort or yield on contact actuation or fail under a specific pressure.
Corrosion blisters are more difficult to prevent because the salts come from external sources and the corrosion process, but primers that have excellent adhesion (particularly wet adhesion) will minimize them.
The study which was published at the Indian Journal of Wound Care and Research, explained that healing is favoured in a moist environment and that blister skin acts as a natural occlusive dressing, protecting the underlying wound and providing a moist environment for the wound to heal.
The reagent blister stores and delivers just the right amount of reagent needed for the determination, so excess reagent is not required.
Then, cover the blister and padding with a bandage.
Scientists in Pfizer's Process Analytical Technologies (PAT) team validated Visionscan's test cycle - which is capable of non-destructively assessing blister integrity for multiple sizes, shapes, cavity configurations and materials of construction.
and when I eat citrus, tomatoes, pork, dairy products, or caffeine (the list goes on), and use any chemical manmade products, just my hands blister.