Calluses on the feet may be caused by long-term friction and infectious diseases and viruses.
1. foot long-term friction: in life, because of wearing shoes too small or hard soles, resulting in the foot skin is often subjected to friction, which caused the foot skin of the stratum corneum thickening, resulting in the occurrence of calluses on the feet.
2. Viral infection: when the foot is infected by the human papilloma virus, it may cause abnormal wart-like proliferation of the plantar skin, thus appearing similar to the performance of the foot callus, for metatarsal warts, can be mistaken for callus.
When the foot long callus situation, it is recommended to go to the hospital to do the examination, to find out the cause of the sex targeted treatment, so as not to cause adverse consequences.