What is a nail infection (paronychia)? Paronychia is nail inflammation that may result from trauma, irritation or infection. It can affect fingernails or toenails.

Understanding the Context

This topic will discuss the pathogenesis, clinical manifestations, and management of acute and chronic paronychia. Ingrown toenails and other nail disorders are discussed separately. Paronychia - an easy to understand guide covering causes, diagnosis, symptoms, treatment and prevention plus additional in depth medical information. Paronychia is an inflammation of the skin around the nail, often due to bacteria or fungi.

Key Insights

Its sudden (acute) occurrence is usually due to the bacterium Staphylococcus aureus. What is paronychia? Paronychia is an infection of the skin just next to a nail (the nail fold). The infected nail fold looks swollen, red and feels tender. There may also be a small collection of pus in the swelling.

Final Thoughts

The nail itself may become infected or damaged if a paronychia is left untreated. Paronychia is a common infection around the nail that can cause redness, swelling, and pain along the nail edge. Learn what causes it, what you can safely do first at home, and when to see a doctor. Paronychia is infection of the periungual tissues. Acute paronychia causes redness, warmth, and pain in the nail folds. Diagnosis is based on clinical examination.

Incision and drainage is an important treatment modality. Antistaphylococcal antibiotics may also be used.