Patients with hard bumps on the outside of their little toes can consider corns, calluses, metatarsal warts, gouty stones and other diseases. 1. corns: corns are associated with long-term friction and pressure on the little toes, manifested as clear-cut keratinous growths, hard texture, yellow or yellowish, and patients usually experience severe pain when standing or walking. 2. Callus: this disease is related to the long-term friction and pressure caused by the thickening of the skin cuticle, mainly manifested as skin thickening, roughness, hard bumps, often occurring in the small toes and other parts of the bone bumps. 3. metatarsal warts: this disease is mainly caused by human papillomavirus infection, belonging to the benign skin superfluous organisms, mainly manifested in the small toes of the pressure parts of the angle over the chemical, rough plaque, some patients can be accompanied by pain. 4. Gout stones: gout patients who do not get timely and effective treatment, resulting in sodium urate crystals deposited in the joints, causing chronic inflammation and fibrous tissue hyperplasia and the formation of stones, mostly in the auricle, the first metatarsophalangeal joints and other parts of the small toes can be hard bumps on the outside of the small toes. A bulge on the lateral side of the little toe may also be caused by other diseases, it is recommended that the patient consult a doctor in a timely manner, to carry out a relevant physical examination, a clear diagnosis, and standardized treatment in accordance with the doctor’s instructions.