Fingernail infection antibiotics: what to know

Redness, warmth, swelling, tenderness or pus around the nail can occur with an infection of the nail fold. A nail injury, biting the nails, a hangnail or frequent contact with water can allow germs through broken skin. Some cases are mild and improve with local care; others form a pocket of pus that may need drainage rather than tablets alone. Antibiotics do not treat every cause of nail inflammation, including irritation or some fungal problems.

Keep the finger clean and dry, avoid squeezing or piercing the swollen area, and protect it from further knocks. A warm water soak may ease discomfort if it does not worsen the skin. Do not use leftover antibiotics or share another person’s prescription. If prescribed, take the medicine exactly as directed and ask what to do if you miss a dose or develop a rash, diarrhoea or breathing difficulty. A clinician may need to examine the nail, check for an abscess and choose a treatment based on its appearance.

Arrange medical assessment if pain, swelling or discharge is increasing, the redness is spreading into the finger, or the nail is lifting or changing significantly. Seek urgent help for fever, feeling very unwell, red streaks up the hand, severe pain, reduced movement, or a finger that becomes pale, blue or numb. People with diabetes, poor circulation or a weakened immune system should seek advice early because a small skin infection can need closer monitoring.

Ask whether the problem is bacterial, fungal or irritation; whether pus needs drainage; how long treatment should take; and which warning signs mean you should return. Mention allergies, pregnancy, regular medicines and any recent antibiotic use.