Acute paronychia: symptoms, care and warning signs

It often follows a small break in the nail fold caused by biting, picking, trimming cuticles, a manicure or an ingrown nail edge. The area may become red, warm, swollen and tender; a visible pocket of pus can develop.

The nail fold forms a seal between the nail plate and surrounding skin. When that seal is damaged, bacteria can enter and trigger rapid inflammation. Yeast is more often considered when nail-fold trouble is persistent or repeatedly exposed to moisture rather than a single sudden episode.

Tenderness is usually centred along one side or the base of the nail. A tense, pale or yellow area can indicate trapped pus, which changes the treatment decision because medicine alone may not empty a collection.

For mild inflammation without a pus pocket, soak the affected digit in comfortably warm water several times during the day, then dry it carefully. Keep pressure off the area and stop biting, picking, cutting the cuticle or trying to pierce the swelling.

A clinician may recommend a topical or oral medicine after checking the extent of infection and your health history. If pus is collected, a small drainage procedure may be needed. Do not use leftover antibiotics or share another person's prescription.

Arrange prompt assessment if pain or swelling is worsening, pus is visible, redness is spreading beyond the nail fold, or home care is not bringing improvement. Seek urgent care for fever, red streaking, severe throbbing, difficulty bending the digit, numbness or rapidly expanding swelling.

Earlier evaluation is sensible if you have diabetes, reduced circulation or a weakened immune system, because a small nail-fold infection can be harder to contain. Deep fingertip pain or grouped blisters also deserves examination rather than squeezing or cutting at home.

Ask whether there is a drainable pocket, whether the pattern could be viral or related to an ingrown nail, and which wound-care steps fit its location. Mention recent manicures, nail biting, wet work, injury, medicines, allergies and any previous episodes.