When a cat presents with crusts, pruritis, and erythema spots on the face and ears, what action should the owner take?

When a cat presents with symptoms such as crusts, pruritus (itchiness), and erythematous spots (redness) on the face and ears, it is crucial to investigate the underlying cause of these skin changes. The action of scraping and culturing the lesions is essential for a couple of reasons.

Firstly, this method allows for the identification of potential dermatological conditions such as bacterial infections, fungal infections (like ringworm), or parasitic infestations (such as mites). Diagnosing these conditions can guide appropriate treatment and management.

Secondly, simply applying a steroid cream or monitoring the cat without further investigation might mask symptoms or lead to a progression of the underlying issue, which can worsen the cat’s condition. Additionally, changing the cat's diet may be helpful in cases of food allergies, but it is not a definitive approach for addressing lesions on the skin without knowing the specific cause.

Thus, scraping and culturing are critical first steps in accurately diagnosing and treating skin issues in cats, ensuring your cat receives proper care based on clear evidence.