blister(redirected from internal blister)
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Related to internal blister: internal callus
blister/blis·ter/ (blis´ter) a vesicle, especially a bulla.
blisterA 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.
blisterA skin vesicle filled with serous fluid, caused by burns, trauma, or by a vesicatory; a collection of serous fluid
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.
CAUTION!If infection develops, treatment is the same as for any other wound, including tetanus prophylaxis or booster as required.
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.
blisterA 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.
blistera collection of fluid, usually serum, between the layers of the skin, causing an elevated lesion. Caused by friction, burns, local allergic responses, e.g. stings. Blisters are common with poor footwear or when exercise is of high intensity and long duration.
blisterfluid-filled dermoepidermal junction or epidermal vesicle (Table 1 and Box 1)
acantholytic blister intraepidermal blister; heals without scarring
blood blister a traumatic blood-filled blister; skin haematoma
junctional blister dermoepidermal junctional blister; heals with scarring
|Intermittent/constant pressure at skin surface||From an underlying bony prominence, tight shoes, sock seam, grit/sand at skin surface|
|Friction/shear stress||Tight shoes, loose shoes, excess sweating, foot oedema, unaccustomed exercise|
|Biomechanical anomalies||Generalized hypermobility, Haglund's deformity, excess subtalar joint pronation|
|Foot deformity||Hallux abductovagus, lesser-toe deformities|
|Chemical irritation||Hypersensitivity reaction to applied chemicals, e.g. used in shoe manufacture/leather tanning, applied caustics, plaster mass|
|Thermal damage||Burns, sunburn, chilling, perniosis, cryotherapy, radiation|
|Infections||e.g. impetigo, fungal/tinea infections|
|Genetic trait||e.g. epidermolysis bullosa|
|Autoimmune disease||e.g. pemphigus, pemphigoid|
|Idiopathic||e.g. spontaneous blistering in response to minimal stimulation in some patients with diabetes|
Patient discussion about blister
Q. What's the best treatment for a blister?
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??