Corns are generally cone-shaped keratoplasm growths on the skin of the foot caused by long-term compression or friction. It occurs in the middle of the forefoot, the outer little toe or the inner bunion, and may also involve the heel. Minor corns are mainly localized cone-shaped corns embedded in the skin, such as the size of a pinhead to a bean, yellowish or dark yellow, with a smooth surface, flat or slightly elevated with the nearby skin surface, usually only 1-2. Corns are usually prone to occur in people who stand or walk for long periods of time. Long-term compression of the foot by wearing shoes that do not fit, are too narrow or too tight can also easily lead to corns. If you feel pain when standing or walking, you can apply topical erosive agents such as salicylic acid paste, corns, or corns ointment if the symptoms are obvious. The use of these drugs should be careful to protect the surrounding skin, you can use adhesive tape to cut a small hole similar in size to the lesion, and then stick the tape to the lesion, so that the lesion leaks out and then localized external treatment to avoid injury to the surrounding skin, you can also choose physical therapy or surgical treatment. Minor corns should usually pay attention to avoid friction and pressure on the feet, wear shoes that fit, loose and soft, and usually keep the feet clean and dry, and avoid long periods of standing or walking to prevent the symptoms from worsening.