Impetigo on the Hands: What to Know

Bacteria can enter through cracked skin, a cut, an insect bite, or a pre-existing itchy rash. Hands can then transfer bacteria to the face, other body areas, or another person. Lesions may sit on the backs of the hands, between fingers, or beside the nails. Painful swelling around a nail, deep tenderness, or reduced finger movement may signal a different or deeper problem rather than simple surface impetigo.

A clinician should assess persistent, spreading, or painful lesions and consider whether another rash, such as dermatitis, has damaged the skin first.

Wash hands with soap and water, clean sores gently, and pat them dry. Cover draining areas with a clean dressing when practical, and change it if wet or dirty. Avoid picking, nail biting, shared towels, and shared nail tools. Keep nails short and pause activities that repeatedly soak or rub the skin. Use prescribed treatment exactly as directed; a clinician may choose a topical option for limited infection or medicine by mouth for wider involvement.

Arrange prompt assessment if redness, warmth, swelling, pus, or pain is spreading, if a finger becomes difficult to bend, or if the area around a nail is very tender. Seek urgent help for fever, red streaks moving up the hand or arm, rapidly worsening swelling, severe pain, or feeling faint or very unwell. Hand infections can interfere with movement and sometimes need specific treatment.

Ask whether the lesions involve the nail or deeper tissue, how to dress the hand, which activities to avoid, whether household contacts need advice, and how quickly improvement should be reviewed.