A friendly stray in the area keeps itching her ears and as a result a lot of the fur by her ears has fallen. Is there any tablet I can give? It's just by her ears and she doesn't itch anywhere else.
It looks like malasseziosis though. But need some more information. Is it scabby? Or has the skin become rough? Also check for the similar lesions on inner part of ear pinna.
The area seems soft. There's no scanning, just these darkish patches. I tried looking for similar lesions inside her ears but didn't see any however I know that she tries to itch inside her ear as well.
Ok. As I mentioned above, it looks like Malasseziosis which is a fungal infection and it needs a proper treatment. You can book an appointment with a vet.