My cat is biting and scratching herself a lot she also has small bumps on her skin she is an indoor cat
Fleas. They're horrible & it's a real war to get rid of them. Good luck.
fleas or mites. Either way, good luck on getting rid of them.
If it's fleas, the vet can prescribe a one dose pill called Capstar that will kill all fleas on her. Then just follow up with a couple of months of Advantage/Revolution, etc... To ensure that all the eggs have been killed too. Worked for me!
Fleas goto a vet
Your cat has fleas. Go to the vet