Ringworm in dogs is a common fungal infection, not a worm as the name suggests. It is medically known as Dermatophytosis and affects the skin, hair, and sometimes nails.

Causes of Ringworm

Ringworm is caused by fungi (dermatophytes) that thrive in warm, humid environments. Dogs can get infected through:

• Direct contact with an infected animal
• Contaminated bedding, brushes, or surfaces
• Poor hygiene or weakened immune system
• Puppies are more vulnerable than adult dogs

How It Looks (Symptoms)

• Circular patches of hair loss
• Red, scaly or crusty skin
• Itching (sometimes mild)
• Brittle or broken hair
• Lesions often appear on face, ears, paws, or tail

These patches often expand outward, forming a ring-like shape.

Home Treatment Guide

Mild cases can sometimes be managed at home, but caution is important:

• Isolate your dog to prevent spreading (it’s contagious to humans too)
• Keep the area clean and dry
• Use antifungal shampoos (like those with miconazole or ketoconazole)
• Apply topical creams recommended by a vet
• Disinfect surroundings (wash bedding, clean floors regularly)

When to See a Vet

• If lesions are spreading rapidly
• Multiple areas are affected
• No improvement within 1–2 weeks
• Puppy or immunocompromised dog

Recovery Time

• Mild cases: 2–4 weeks
• Moderate to severe: 4–8 weeks or longer with proper treatment

Ringworm is treatable but highly contagious. Early care, proper hygiene, and consistent treatment are key to a quick recovery and preventing spread to other pets or family members.