CSU ext

Ringworm (Dermatophytosis) is a skin disease caused by fungi found throughout the world. Ringworm is a zoonotic disease that can affect humans and all animals, but most commonly cats and cattle.

How is it transmitted?  
Direct contact with an infected animal or human fungal lesion.
Indirect contact from surfaces (blankets, grooming equipment, posts, feed bunks) where animals or humans lesion may have rubbed against.

ringworm

What are the signs in animals? Lesions may be red, thick, scaly and itch, progressing into thick crusty scabs that increase in size with hair/ wool loss. 

ringworm in cows

What are the symptoms in humans? Skin lesions  are scaly, red, and often circular and itchy.

ringworm in humans
More information at Merck Vet Manual:
http://www.merckvetmanual.com/mvm/index.jsp?cfile=htm/bc/171524.htm&word=Ringworm