Hi, Thanks for the query. The condition you are referring to is probably infection of the nail bed. It is because the nailbed got exposed to water through the hole. You need to take oral antibiotics like amoxycillin-Clavulanate and analgesics for the same. The nailbed should be cleaned with appropriate antiseptic like povidine iodine solution and the nail area should be covered with a dressing to avoid exposure to water. Consult a nearby dermatologist for initial cleaning and dressing.