My cat has developed a (sudden) bald patch on her back just by the tail
, about 3-4 centimetres diameter.
The hair is growing back really well but now another has come on her outer back leg, again very suddenly.
Her fur is in exceptionally good condition apart from these 2 areas, her diet has not changed and nor has anything else that comes to mind, she's about 7 years old, her sister (my only other cat) hasn't shown any symptoms, and they live a very active outdoor life in a remote place with no other cats for a big radius.
The skin in the bald patches is slightly scaly, and she hasn't been scratching though I have seen her licking the areas.
I comb the cats regularly for fleas, which they don't have, but don't use any other chemical treatments for 'that kind of thing'.
I would be very willing to give any more information if it can help you pinpoint the cause and what best to do about it.
Thank you very much