This is a cat health problem question posed by a visitor today. It is reproduced verbatim. This is the link to the comment.
My cat has skin scabs, have used flea products, sprays powders and carpet treatments. none of which have helped. I have not found any fleas ,and our two dogs do not have any.could you please give me suggestions as to what else may be the cause,and cure. thankyou so much.
The obvious answer is to see a vet. However, the lady, Holly, who posed the question has asked PoC so what I will do is provide all the possible causes from good books.
Firstly it pays to eliminate breeding issues. The comment was made on a page about the Ragdoll cat although I don’t think Holly has a Ragdoll. Although she might. The best book on genetic health problems in purebred cats does not highlight any genetic causes for scabs in Ragdoll cats.
Next I’ll look at the more usual suspects:
Flea bite allergy. Even though you have not found any fleas it only takes one to bite your cat and cause an allergic reaction. This shows as red crusty bumps and it drives your cat to scratch. This breaks the skin and scabs form. Fleas are very hard to get rid off entirely despite doing all that you do. Try Frontline drops and stick to the regime if a flea bite allergy is diagnosed by your vet plus a thorough flea elimination program. See also cat flea products.
Feline Scabies or head mange causes intense itching. It is caused by the head mite. A tiny parasite. The itching drives the cat to scratch which leads to the inevitable scabs if not treated. Is your cat scratching and is this causing the scabs. That is the first question. Treatment: the vet will tell how.
Harvest mites or red bugs can also be on your cat’s skin. Cats collect this bug when prowling around grassland and fields etc. They irritate and itch. The larvae suck on the cat’s skin. Red draining sores and scabs form.
Ringworm, a common condition causes scabs and crusts sometimes. Also the skin may itch and the cat may scratch causes wounds and scabs.
Ear mites are commonplace. They are not confined to ears. They are uncomfortable for a cat. The cat scratches and this as usual causes scabs eventually. They are easy to diagnose. You vet can do this and prescribe a treatment.
The above are the usual reasons for scabs on cats. You can see that often the scab is caused by self-mutilation from scratching.
Feline acne also comes to mind. You might check this out too. See feline acne treatment.
Hope this helps. However, there is no substitute for a good vet.