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Published on: 8/20/2026

How do I know if my fingernail is infected, and what are the treatment options?

An infected fingernail typically shows these signs: redness, swelling, pain, tenderness, or pus around the nail. Common causes include bacterial infections (paronychia), fungal infections, or ingrown nails from injury or nail biting.

Treatment depends on severity:

  • Mild infections: Warm water soaks 3–4 times daily, over-the-counter antibiotic or antifungal creams, and keeping the area clean and dry.
  • Moderate to severe infections: Prescription oral antibiotics, antifungal medications, or drainage of pus by a healthcare provider.
  • Chronic or recurring cases: May require partial nail removal or long-term antifungal therapy.

Seek medical care if symptoms worsen, spread, or persist beyond a few days, especially if you have diabetes or a weakened immune system.

Because fingernail symptoms can point to several different conditions—each with its own treatment path—guessing wrong can delay healing or make things worse. Before self-treating, take a free, instant, online symptom check to get a clearer picture of what may be causing your symptoms and confident next steps to take. It takes just a few minutes and could save you days of discomfort.

Reviewed for medical accuracy: 07/15/2026

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An infected fingernail may show clear warning signs. Look for redness or swelling around the nail and skin folds. The area might feel extra tender or warm, and you might see pus or fluid coming from the nail. In some cases, fungal infections can make the nail appear thick, discolored, or brittle. When these signs show up, it is important to act promptly. There are different ways to treat an infected fingernail. For mild infections, especially those involving bacteria (like paronychia), warm water soaks can help reduce pain and draw out the infection. Topical antibiotic or antifungal creams may be used depending on whether the infection is bacterial or fungal. If the infection is more severe or does not improve with these methods, a doctor might suggest oral antibiotics or antifungal medications. They might also take steps to drain any pus if needed. Keeping your hands clean and dry, trimming your nails carefully, and avoiding harsh chemicals are important steps to manage and prevent infection. If you're experiencing concerning symptoms and want to better understand what might be causing them, you can take a free symptom checker quiz to help guide your next steps, but if your infection gets worse or does not improve, it's best to contact a healthcare professional.

(References)

  • Updated 2022 Dec 2]. Available from: https://www.ncbi.nlm.nih.gov/books/NBK279546

  • Dulski A, Edwards CW. Paronychia. [Updated 2023 Aug 7]. In: StatPearls [Internet].

  • Lee DK, Lipner SR. Optimal diagnosis and management of common nail disorders. Ann Med. 2022 Dec;54(1):694-712. doi: 10.1080/07853890.2022.2044511. PMID: 35238267; PMCID: PMC8896184.

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