The reasons why cats have hard little bumps like scabs on their heads and necks:

1. The scabs caused by itching and scratching of cats require timely trauma treatment. At the same time, put an Elizabethan collar on the cat for protection to prevent secondary injuries.
2. If parasites appear on the cat, such as scabies and demodectic mites, scabs will appear. At this time, external deworming and medication should be given to treat the cat to avoid recurrence.
3. Cat ringworm can also cause scabs on the cat’s neck. It usually needs to be treated with some external antifungal drugs and maintained hygienic.
4. Trauma can also cause scabs, so it is recommended that owners disinfect the cat’s wounds regularly to avoid further suppuration and infection.
5. After a cat is bitten by a mosquito, the mosquito will release formic acid in the cat's skin, causing hard bumps on the cat's body.

Treatment methods for pimples and scabs on the head and neck of cats:
1. After cats are infected with tinea felis, they will generally have round spots of hair falling off and a large number of spots on the exposed skin. For dandruff and scabs, the owner needs to use warm water to remove the dander or scabs on the affected area every day, then apply some antifungal drugs to the cat, and also give the cat a medicated bath, which will help the cat recover faster.
2. Supplement the cat with nutrients. You can feed the cat a ration of nutritional paste, lysine or other vitamins. This can improve the cat's own immunity and resistance, and thus heal cat ringworm quickly.
3. Create a clean living environment for cats. Cat ringworm may be transmitted to humans. Every time the owner gives the cat medicine, he must wash his hands and disinfect the items in time to prevent the cat from being infected with cat ringworm. .
4. If a cat has skin problems, it is still necessary to take the cat to a regular pet hospital in time to find out the cause and provide targeted treatment.