Cat Nail Bed Infection (Paronychia): Signs, Treatment & Home Remedies
Cat nail bed infection (paronychia) causes redness, swelling, and nail discoloration. Learn to spot it, treat mild cases at home, and when antibiotics are needed.
Published 2026-04-18
If your cat's paw is swollen specifically around the base of one or more claws — with redness, maybe some discharge, and possibly a claw that looks discolored — you're likely dealing with a nail bed infection. The medical name is paronychia, and while it's less common in cats than in humans (we get it around hangnails), it's a real condition that progresses quickly if ignored.
Here's how to spot it, when you can treat it at home, and when your cat needs antibiotics.
Paronychia: The Medical Name
Paronychia (pronounced para-NICK-ee-uh) means "inflammation around the nail." In cats, it refers to infection or inflammation of the skin and soft tissue around the claw base — including the pocket the claw sits in (the nail fold). It can affect one claw or several, and can be caused by bacteria, fungi, yeasts, or a combination.
How Do You Know if Your Cat's Nail Bed is Infected?
Classic signs of cat nail bed infection:
- ✓Redness and swelling focused at the base of one or more claws
- ✓Heat in the area when you gently touch it
- ✓Pus or discharge at the nail base — white, yellow, green, or brown
- ✓A claw that looks discolored (yellow, brown, or black staining at the base)
- ✓Your cat licking one specific paw or claw repeatedly
- ✓Limping, especially when walking on hard surfaces
- ✓A crusty or scabbing area at the nail fold
- ✓In severe cases, the claw may become loose or fall out
When the Nail Turns Black at the Base
A claw that darkens at the base (where it emerges from the skin) is often a sign of FUNGAL infection rather than bacterial. Fungal infections are slower-moving but more stubborn — they spread into the nail material itself and require longer treatment courses. If you see black staining specifically at the base of the claw, without much redness but with thickening, fungal is the more likely cause.
Fungal vs Bacterial Infection — How to Tell
The two types can look similar but have different clues:
- ✓Bacterial: rapid onset (days), red + hot + swollen, often pus, sometimes fever — treated with antibiotics
- ✓Fungal: slow onset (weeks), discoloration + thickening, less redness, often affects multiple claws — treated with antifungals
- ✓Both: mild pain, licking, limping
A vet can do a culture to confirm which type, but many cases need a combination treatment anyway.
Home Treatment for Mild Cases
If the infection is clearly mild (one claw, mild redness, no pus, your cat is otherwise behaving normally), you can try home care for 5-7 days before escalating:
Soaks & Wipes
- ✓Chlorhexidine solution 2%: soak the paw for 5 minutes 1-2x daily, then pat dry
- ✓Povidone-iodine (betadine): dilute to iced-tea color, soak 5 minutes 1-2x daily
- ✓Saline rinse: for cats that hate any scented solution
Apple Cider Vinegar — Use With Caution
The internet is full of "ACV home remedy" suggestions. Diluted ACV (1:3 with water) can rebalance skin pH and has mild antibacterial properties, but it STINGS broken skin. Only use on intact skin, never on open wounds, raw nail beds, or pus-containing infections. Cats dislike the smell and will lick more, which can worsen the problem.
Ointments
A tiny dab of pet-safe topical antibiotic (not human Neosporin long-term) can help, but the bigger challenge is keeping the cat from licking it off. Usually soaks are more effective for nail beds because they reach into the fold where ointment can't.
Keep the Area Dry
Bacteria and fungi thrive in moisture. After any soak, pat dry thoroughly. Keep litter clean and consider switching to pellet litter temporarily so wet clumps don't stick to paws.
When Antibiotics Are Needed
See a vet (same week) if:
- ✓Pus or yellow/green discharge is present
- ✓More than one claw is affected
- ✓There's significant swelling or heat
- ✓Your cat is limping badly or off food
- ✓Home care for 5-7 days hasn't improved it
- ✓The claw has become loose or is falling out
- ✓You see black nail discoloration with thickening (likely fungal)
Vet treatment typically involves: a 7-14 day course of oral antibiotics (for bacterial), oral or topical antifungals (for fungal), and sometimes surgical nail removal in severe chronic cases.
How Long Does a Nail Bed Infection Last?
- ✓Mild bacterial, home-treated: 5-10 days
- ✓Moderate bacterial, with antibiotics: 10-14 days
- ✓Fungal infections: 4-8 weeks of treatment
- ✓Severe or chronic cases: several weeks to months
Most cats heal completely with appropriate treatment. Recurrences are possible if underlying causes (e.g., ingrown claw, grooming issues in elderly cats, FIV/FeLV) aren't addressed.
Prevention After Treatment
- ✓Trim claws regularly — monthly for active cats, every 2 weeks for elderly
- ✓Check all claws (especially dewclaws) once a month
- ✓Keep the litter area clean to minimize reinfection
- ✓Consider FIV/FeLV testing if your cat has recurring infections
- ✓Address any pica (nail-chewing behavior) if present
Not sure if it's a nail bed infection or something else? A photo comparison can help identify the right treatment path.
Is It a Nail Bed Infection or Something Else?
Upload a photo of the affected paw and get an AI assessment of likely cause — bacterial, fungal, or something else entirely.
Disclaimer: This article is for informational purposes only and is not a substitute for professional veterinary advice. Always consult a licensed veterinarian for diagnosis and treatment of your pet's health conditions.
