Finger infections can be caused by a variety of bacteria and viruses. Types of finger infections include paronychia, felon, herpetic whitlow, cellulitis, infectious flexor tenosynovitis, and deep space infection. Symptoms and treatment of a finger infection depend on the type.

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Doctor's Notes on Finger Infection Symptoms

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Cellulitis

Cellulitis is a bacterial infection of the skin and soft tissues that causes swelling, redness, tenderness and warmth. Treatment will involve antibiotics. Severe infection may require IV or intramuscular antibiotic injections.
Onychomycosis

Onychomycosis is an infection of the fingernails and/or toenails by fungus. The infection causes nails to discolor, thicken, and split, which can cause discomfort, especially in toenails. Onychomycosis is most common in adults, especially the elderly.
Paronychia (Nail Infection)

An infection that develops along the edge of the fingernail or toenail is called a paronychia (pear-ah-NIK-ee-ah). Symptoms and signs include redness and swelling around the nail, pus, and pain. If an abscess has formed, the recommended treatment is to drain the abscess.

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Nail Infection (Paronychia) An infection that develops along the edge of the fingernail or toenail is called a paronychia (pear-ah-NIK-ee-ah). Symptoms and signs include redness and swelling around the nail, pus, and pain. If an abscess has formed, the recommended treatment is to drain the abscess.