I have a lyr. old Great Dane who has developed round patches on her skin. The patches are pink and the hair is missng on the patches. I have wormed her and that hasn't helped. I need to know if this is a disease or some sort of contact dermatitis.??
Yes, it could be a contact dermatitis. Other possibilites include fungal infection, skin infection, allergy, flea bite allergy, mange. I recommend a visit to the vet. Vetcare