What causes hard bumps on your feet?

Hard bumps on the feet may be caused by callus, corns, plantar warts and other diseases.
1. Callus: long-term friction, pressure and other mechanical stimuli will cause excessive proliferation of the cuticle of the skin, especially in the bony elevation. Patients will have localized skin thickening, hard bumps and other symptoms, manifested as hard bumps on the feet.
2. Corns: limited, keratinized, conical thickenings caused by long-term pressure and friction on the skin of the feet. It is often manifested in the affected area, thickening of the skin, like soybean-sized keratin proliferation, often accompanied by pain, the performance of the foot long hard pimples of the symptoms.
3. metatarsal warts: is caused by human papilloma virus infection, will be on the soles of the feet or heels and other pressured places, there are small, shiny keratinized papules, remove the keratinized soft core can be seen after several small black spots, keratinized papules can gradually increase to the size of a soybean or the formation of a yellowish or brownish rough plaque. The disease is also one of the phenomena that cause hard pimples on the feet.
It is recommended that patients with hard pimples go to the dermatology department of regular hospitals for a clear diagnosis, and under the guidance of the doctor, standardized medication.