There is a possibility that your catï¿½s problem is related to diet or that fleas are causing the problem.
Other issues that can cause cats to develop scabs are allergic reactions, skin infection with fungus or bacteria, skin parasites, hypothyroidism etc. Most frequently it is caused by allergic reaction and that too allergic reaction to fleas. Cats that are allergic to fleas develop a syndrome called miliary dermatitis that leads to scabs near the tail and sometimes around the neck.
As a first step I would recommend measures to control fleas. Even though you may not see fleas on your pet, it could still suffer from flea allergies. It is possible to develop flea allergies by something as simple as contact with other pets.
I do not recommend to remove the scabs because it can cause secondary infection.
Along with flea control treatment, you can administer vitamins like vitamins A, E or omega 3 and 6.