Dermatitis is a significant health concern for chicken keepers. This guide covers the signs, causes, and management strategies to keep your flock healthy.
What it looks like
Birds affected by this condition may show one or more of the following signs:
Red, inflamed skin (Skin (usually unfeathered areas: feet, vent, head)) — Affected skin appears bright red, swollen, and irritated
Scabs, crusts, or sores (Skin surface) — Raised, crusty, or scabby lesions; may ooze clear or purulent fluid
Feather loss or poor feather condition (Feathers) — Bald patches or poorly formed feathers; feathers appear dull or broken
Itching and excessive scratching (Affected skin) — Bird scratches, pecks, or rubs affected areas repeatedly; may appear irritated
Swollen feet or hock joints (Feet and legs) — Swelling, redness, or discharge from feet or leg joints
Discharge or drainage (Infected areas) — Clear, yellowish, or purulent (pus-filled) drainage from lesions
Likely causes
This condition can arise from multiple sources:
- Bacterial infection (Staphylococcus, Streptococcus, E. coli) from wounds or scratches
- Fungal infection (ringworm, Favus) causing circular lesions and feather loss
- Parasitic mites or lice causing irritation and secondary bacterial infection
- Contact dermatitis from irritant bedding (ammonia from litter), chemicals, or allergens
- Trauma or wounds from feather pecking, injury, or rough handling
- Poor sanitation and overcrowding increasing infection risk
What to do
Clean affected areas gently and apply topical antiseptic or antibiotic ointment. Isolate bird if contagious (fungal or bacterial). Antibiotics (oral or injectable) may be needed for systemic infection. Improve sanitation and housing conditions. Pain relief (if available) improves welfare.
When to see a vet
See a vet if your bird shows severe signs, if multiple birds are affected, or if the bird doesn’t improve within a few days of treatment.
Prevention
Maintain clean, dry bedding (remove ammonia-producing litter). Ensure good ventilation and avoid overcrowding. Minimize trauma (reduce feather pecking causes: stress, overcrowding, boredom). Treat parasites (mites, lice) regularly. Quarantine new birds.
Frequently asked questions
Is dermatitis contagious to other chickens?
It depends on cause. Fungal dermatitis (ringworm) and some bacterial infections spread through contact or contaminated bedding. Isolated trauma (from feather pecking or injury) is not contagious.
How do I treat chicken skin infections?
Clean the area gently, apply topical antiseptic, and isolate the bird. If infection is severe or spreading, antibiotics may be needed. Improve housing sanitation and reduce stress factors.
Can I catch ringworm from my chickens?
Yes, some types of chicken ringworm can infect humans (zoonotic). Wear gloves when handling affected birds and practice good hygiene. Seek medical care if you develop suspicious skin lesions.
What causes ammonia dermatitis?
Ammonia buildup from wet, contaminated litter irritates exposed skin (feet, vent, unfeathered areas). This causes inflammation and predisposes to bacterial infection. Change bedding regularly and ensure good ventilation.