Oversized ingrown nails may cause patients to develop onychomycosis, which can be treated by general treatment, medication and surgery. 1. General treatment: In daily life, patients should not wear tight shoes, choose softer and looser shoes. At the same time, avoid walking and standing for a long time. If the local area is red, swollen and damaged, apply povidone-iodine to disinfect it, and don’t trim the toenails excessively. 2. Medication: when the oversized ingrown toenails cause inguinitis, patients can take metronidazole, cefaclor and other antibiotics under the guidance of the doctor for anti-infection treatment. Or topical mupirocin ointment and other medications. 3. Surgery: For the recurrence of oversized ingrown toenail caused by inguinal inflammation, the patient can be surgically extracted from the toenail, or excise the affected part of the toenail, which can quickly improve the symptoms. Patients with oversized ingrown toenails should seek medical attention when they experience toe discomfort to avoid aggravation of the condition.