Yeast (candida) is a normal part of the digestive Flora and, in a healty dog or person, is kept 'under control' by a strong proliferation of the beneficial bacteria. Your dog will have a yeast problem when the necessary bacteria is destroyed by outside factors, most frequently vaccination reactions. That same bacteria, when present in healthy amounts, also accounts for as much as 70% of immune function; therefore, its destruction can desimate much of immune system capabilities.
There are multiple underlying causes for dog skin sores including parasites (fleas, mites), poor grooming, dog skin infection (bacterial pyoderma, fungal), endocrine diseases, skin or hair follicle disorders disorders such as seborrhea, medication side effects (from corticosteroids) and allergy.
Illness-related causes of skin lesions. Skin lesions may be caused by another illness including: Bacterial infection, such as scarlet fever, or meningococcal meningitis, a serious condition caused by group A Streptococcus, can cause a skin rash.ommon causes of skin lesions. Changes in the appearance of the skin can result from common conditions such as: 1  Acne. 2  Boils and carbuncles. 3  Folliculitis. 4  Freckles. 5  Nevi (moles) and other benign skin growths.