Some painful skin disorders included Feline Acne, Impetigo (
pus filled blisters) and
Abscess (painful, hot, inflamed skin or pockets of pus beneath the skin). Also, hair loss can be caused by diseases such as Ulcers, ringworm, mange etc. Perhaps, being the fact that she was stray, she has ringworms, but only a vet should give a full diagnosis. Tapeworms and other fungal problems can be treated utilizing a 2% solution of OX-E-DROPS or Tincture of Black Leaf.