How do you treat a finger without a nail?

To treat a finger without a nail, first clean the area gently with soap and water to prevent infection. Apply an antibiotic ointment and cover the finger with a sterile bandage or dressing to protect it. Keep the area dry and change the dressing regularly, watching for signs of infection, such as increased redness, swelling, or discharge. If the finger is painful or shows signs of complications, consult a healthcare professional for further evaluation and care.