Just noticed this bloody spot this morning. Noticed she is scratching it raw and shaking her head. She seems irritated. Noticed when i inspected it closer, its haf of her neck. There are also dark skin patches. I applied some anti itch cream with melaleuca oil in it and she seems happier. Calm and no longer trying to itch. I plan on quarantining her. what is it and what can I do to help her?