Cat Swollen Nail Bed with Pus: Causes and Veterinary Triage Guide

TL;DR: A swollen nail bed with pus in cats indicates a painful infection called paronychia that requires veterinary attention within 24 to 48 hours. Prompt treatment is necessary to prevent the infection from spreading to the bone or causing systemic illness.

What causes my cat to have a swollen nail bed with pus?

When a cat has a swollen, painful nail bed accompanied by pus, it is typically a condition known as paronychia. This is a localized infection of the soft tissue surrounding the claw. It often occurs after a traumatic injury, such as a broken nail, a bite wound, or an overgrown claw that has pierced the paw pad. The presence of pus indicates that the body is fighting a bacterial or fungal infection that has taken hold in the sensitive tissues of the nail fold.

Is a swollen nail bed infection in a cat considered a veterinary emergency?

• The urgency level for this condition is Medium; you should aim to have your cat seen by a veterinarian within 24 to 48 hours.
• While rarely an immediate life-threatening emergency, it is significantly painful and requires medical intervention.
• Delaying treatment can allow the infection to spread to the underlying bone (osteomyelitis) or lead to systemic illness.
• Seek veterinary care more urgently if you notice your cat is lethargic, hiding, or refusing to eat.

How does taking a photo of my cat's paw help with veterinary triage?

• A visual assessment allows a professional to see the degree of swelling and the color and consistency of the discharge.
• The photo helps determine whether the nail itself is still intact or fractured, which indicates severity.
• This information allows the clinic to prioritize your cat’s appointment appropriately.
• Veterinary staff can provide specific first-aid instructions, such as using an Elizabethan collar to prevent licking, until you arrive.