Paronychia is an infection in the skin around the nail, which becomes inflamed, swollen, and painful. Learn more about causes, treatments, and preventions. Paronychia: Causes and Treatments Paronychia is a common infection of the skin around the nails that can be painful and debilitating. This condition can be acute or chronic, with various underlying causes, symptoms, and treatment options. It manifests as redness, swelling, and sometimes pus formation in the affected area. The infection can be categorized into two types: acute paronychia and chronic paronychia. Paronychia is a skin infection around the nails of the fingers or toes. Learn about the types, causes, symptoms, and treatments of paronychia, including antibiotics, antifungals, and home remedies. Paronychia is a common nail infection that causes soreness, redness, and pus around the nail. Learn how to prevent, diagnose, and treat it with home remedies, antibiotics, or surgery if needed.