My cat loses her hair every winter. She goes bald on her belly during November then it spreads to inner thighs, tail and flanks to a greater or lesser extent. By the time spring comes round the hair is growing back and she will have a beautiful full fur coat by June.
The cat is 9 years old, this has happened every year for 5 years or so. She doesn't have fleas & i haven't used a flea treatment on her since summer. She behaves like a healthy, normal cat, appetite is good & she is very active. I don't think she's ill. The vet charged me £50 a couple of years ago to tell me there's no obvious cause & prescribe antibiotics which made no difference.
Any ideas or experience of this? I'm not overly concerned but she must be cold when outside!