<Tr> <Th> Specialty </Th> <Td> Dermatology </Td> </Tr> <Tr> <Th> Complications </Th> <Td> Skin ulceration, infection </Td> </Tr> <P> A callus is an area of thickened skin that forms as a response to repeated friction, pressure, or other irritation . Since repeated contact is required, calluses are most often found on feet because of frequent walking and incorrectly fitting footwear . While they can be perceived as being unsightly, calluses are generally not harmful, but if neglected for long periods may sometimes lead to other problems, such as a skin ulceration or infection, or cause the sufferer to try and offload the affected painful area, which can place excessive stress on the asymptomatic side . Rubbing that is too frequent or forceful will cause blisters as opposed to calluses to form . </P> <P> Normally, a callus will form on any part of the skin exposed to excess friction over a long period of time . For example, people often develop calluses on the middle finger of their dominant hand due to writing with a pen or pencil . Another cause is from playing string instruments like the guitar or the violin; calluses will develop on the four fingers of the hand used in holding the strings down to the fingerboard, and sometimes on the fingers of the hand used for pizzicato or strumming . Weightlifters commonly experience callus on the upper - palm area due to repeated friction . Calluses are also very common on the fingers of rock climbers on almost all of their fingers . There are many activities that can result in the formation of a callus, which may even be viewed as a badge of experience and commitment to the activity . </P>

Why do i have callus on my hands
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