What should you know about paronychia pus under nail?

Paronychia is inflammation or infection in the skin bordering a fingernail or toenail. Tenderness, throbbing, redness, warmth, swelling, and a visible collection of pus can develop after a torn cuticle, nail biting, manicure trauma, splinter, or other break in the skin.

The collection may sit at the side of the nail, beneath the nail edge, or in the fingertip. A short-lasting episode is often linked with bacteria. Repeated or longer-lasting nail-fold inflammation can have a yeast contribution, especially when the hands are frequently wet or exposed to irritants. The nail may become ridged, lifted, or change colour when inflammation continues.

Keep the finger or toe clean and dry, and protect it from pressure. Warm-water soaks can soothe soreness and encourage gentle drainage when there is no deep wound; dry the area carefully afterward. Do not pierce, cut, squeeze, or lift the nail yourself, because this can push infection deeper or injure the nail bed.

Avoid biting the nail, cutting the cuticle, applying artificial nails, or sharing nail tools until the skin has settled. A clinician may recommend a topical treatment, antibiotics for a bacterial infection, or a small procedure to release a trapped collection. Treatment depends on where the pus is located and how extensive the inflammation is.

Arrange prompt medical assessment if pus is clearly trapped under the nail, pain is increasing, the swelling is spreading, or finger movement is becoming difficult. Seek urgent care for fever, red streaks moving up the finger or toe, rapidly worsening redness, severe throbbing, numbness, or marked difficulty bending the digit.

A clinician should also examine an infection that follows a bite, puncture, embedded splinter, or significant nail injury. People with diabetes, reduced immunity, or poor circulation should seek advice early because a small nail-fold infection can require closer monitoring.

Ask whether the collection is superficial or beneath the nail, whether it needs drainage, and which signs would mean the infection is spreading. You can also ask how to protect the nail while it grows out and whether a recurring problem could involve yeast, irritation, or an underlying skin condition.