Nah my indoor cat has dandruff and eats tuna and vet grade tin and dry food for gastrointestinal issues and boiled chicken... He doesn't have fleas as his not in contact with other animals....He IS however a long haired persian. My cat groomer (who is also a vet nurse) said it is because his fur is thick and doesn't get a chance to air and get cleaned properly...He is wormed etc regularly. I just run a wet facewasher over him to pull off as much as i can... Other then that his pretty happy and well. :)
Try an omega suplement, but the bath works the best if you have a death wish...
Change your cat's diet and perhaps get moisturizing cat shampoo.
bath time!!! though i would get that checked at the vet as it could be a skin condition that might be irritated by standard pet shampoo. your vet probably has some special shampoo for that.
Do you bath her? If you know she hates it I'd assume yes. If that's the case there's always a possiblity that your not getting all the shampoo out of fur. Which would cause itchyness, and possibly the dandruff. If I assumed wrong that you don't bath her, then I agree a trip to the vet is in order. Till you know what your dealing with you can't fix it.
She may have a thyroid condition that is causing her dry skin. My kitty had dandruff too, but we found changing her food really helped.
It could be from fleas.... the cat could be allergic to the flea bites. A trip to the vet would be a good idea!
kitty may have allergy
Ask a vet. The condition could be more than dandruff.