The formation of corns is often caused by long-term mechanical stimulation of the localized skin. Corns are a relatively common skin disease, often occurring on the bottom of the foot, mainly due to long-term friction and stimulation of the local skin, such as often wearing ill-fitting shoes or walking for a long period of time, may lead to localized skin hyperplasia of the corneous layer of the foot, resulting in the formation of corns. Corns are usually clear cuticle growths, yellow or yellowish in color, with a variable number of them, either one or more, which can cause severe pain when walking as they gradually increase in size. If you have corns on your feet, you must go to the dermatology department of the hospital in time, and cooperate with the doctor to take treatment to avoid aggravation of the condition.