Causes and risk factors
As the name suggests, contact or pressure between the skin is the main cause of friction blister. Forces occurring between the skin and objects lead to separation of the outer layers of the skin. Gaps are formed which are then filled with fluid which cause formation of a blister. Certain factors act as predisposing factors. The common ones among them are excessive heat or sweating. Wearing tight clothes or rough fabrics, vigorous exercises, and carrying heavy loads are few contributing factors. Tight or new shoes which causes rubbing of the skin of soles, formation of blister is more commonly seen in pressure areas like the hip. Certain diseases of the skin, use of medications, and damage due to sunlight are other contributing factors. Friction blisters are more commonly seen in sports players and military people.
Clinical presentation:
The complaints are usually mild. They are commonly seen in pressure areas like hip, armpits, soles, or palms. Pressure or rubbing of the skin causes abrasion or peeling of the skin. The superficial layer is separated. The gaps are formed which are filled with fluids leading to formation of an eruption which are filled with fluids. Redness is seen on the affected area while the surrounding areas become pale. Burning pain is felt and soreness occurs. Over a period of time, the fluid is reabsorbed and peeling of the skin occurs. This damaged skin becomes prone to secondary infections. It can lead to complications like cellulite, impetigo, and sepsis.
Investigations:
Diagnosis is done on the basis of the symptoms narrated by the patient and the physical examination carried out by the dermatologist. Usually a history is obtained from the patient and the local examination carried out is sufficient for diagnosis. Swab test and routine blood tests can be done to detect any infections. Histopathological examination and skin biopsy test can be done.
Treatment:
Usually when the complaints are mild, the blisters heal on their own. A large blister may need draining of the fluid under aseptic precautions. Hydrocolloid blister plaster help in fast healing. In cases of infection, antibiotics are advised; either oral or topical applications are advised.
Other modes of treatment:
Certain other modes of treatment can also be helpful in coping up with the symptoms. Taking into consideration the symptoms in a holistic way, homoeopathy can offer a good aid for the relief of the symptoms.
