Things You'll Need
- Ultraviolet light
Instructions
Monitor the area of infection. Typical ringworm lesions are circular rings with a healed area at the center. When the lesion begins to heal, this ring disappears and leaves an even-looking patch of skin.
Check for any new lesions, particularly around the paws, tail, face, tips of the ears. These are the most common areas of infection.
Shine an ultraviolet light on the area of your puppy's infection. If the area is still infected, the broken hairs surrounding the lesion fluoresce.
Watch for hair to grow back at the spot of the lesion.
Monitor your puppy's behavior. Lesions sometimes itch, and their scratching may lead to pussy or further irritated skin. If your puppy continues scratching, he may not be healing properly.