Lymphoma can also bring on symptoms like: Dogs with cutaneous lymphoma have red, itchy, dry, and flaky patches of skin. As the disease gets worse, the skin becomes thick and moist with open sores.

It is a skin infection caused by a fungus. In dogs, ringworm often presents as a dry, gray, scaly patch, although it may cause no symptoms at all. In people, it forms a round, red lesion with a ...

Also called Tinea capitis, this infection affects your scalp and hair shafts, causing small patches of itchy, scaly skin. Ringworm is ... House pets, such as cats and dogs, can spread ringworm ...