Cat has a bald spot on back of neck 3 head vet said it wasnt ringworm and scraping came neg hair around spots pulls out easily white scabs from occassional scratching what could this be?

Potential causes of a bald spot on the back of a cat's neck:

1. Allergies: Allergies to food, environmental allergens, or flea bites can cause skin irritation, itching, and hair loss.

2. Flea infestation: Fleas can cause intense itching and biting, leading to hair loss and scabs.

3. Ringworm: Ringworm is a fungal infection that can cause circular, scaly lesions on the skin. However, you mentioned that the vet has already ruled this out.

4. Bacterial or fungal infection: Other types of skin infections, such as bacterial or yeast infections, can also cause hair loss and scabs.

5. Skin trauma: Injuries or wounds on the back of the neck can cause hair loss and scabs.

6. Autoimmune diseases: Certain autoimmune diseases, such as feline alopecia, can lead to hair loss and skin problems.

7. Cancer: In rare cases, a bald spot on the back of a cat's neck could be a sign of skin cancer.

Recommendation:

Since you've already consulted with a veterinarian and ruled out ringworm, it is important to follow up with them to discuss the ongoing skin issues your cat is experiencing. The appearance of white scabs and easy hair removal suggests that further investigation is necessary to identify the root cause of the problem. Your vet may recommend additional diagnostic tests, such as a skin biopsy or culture, to determine the specific cause of the hair loss and scabs and prescribe appropriate treatment. It is crucial to obtain an accurate diagnosis to ensure proper management and treatment of the underlying condition.