My cat is 19 and in generally good health - sleeps a lot, started using the litter tray after s few recent accidents but I’ve now noticed she has what looks like dandruff and is drooling s lot especially if being stroked Anyone else got a car in need of head and shoulders?!
Maybe a little olive oil in her food would help her skin? I may be imagining it but I’m sure the vet recommended it for one of mine. Have her teeth been checked recently? That could cause drooling, but some kats just do dribble!
Both those things are most commonly a result of teeth problems. You need to get her teeth checked. And it's still worth having a dental even though she is very old. The risks can be minimised and living with tooth pain is horrific, so the small risks are definitely worth it.
Likely mouth/tooth pain causing drooling and therefore inability to groom (lick)) herself properly, causing the dandruff. Make an appointment at the vets and get a soft brush to very gently groom her. Elderly cats also often can’t groom themselves properly due to arthritic spine, joint pain etc. Vets can help with pain management.