TL;DR: Overgrooming that leads to raw skin is typically caused by underlying allergies or stress and requires a veterinary appointment within 24 to 48 hours unless signs of infection are present.
What causes my cat to overgroom until their skin is raw?
When a cat licks a specific area excessively, it is known as overgrooming or psychogenic alopecia. This behavior often leads to the skin becoming raw, red, and inflamed. While the act of grooming is natural, the intensity of this behavior usually signals an underlying issue such as skin allergies, flea infestations, or emotional stress and anxiety. The physical damage occurs because a cat's tongue is covered in tiny, hook-like barbs called papillae, which can quickly abrade the skin and lead to secondary infections.
Is overgrooming an emergency and how quickly should my cat see a vet?
- Overgrooming resulting in raw skin is generally considered a Medium Urgency situation indicating significant discomfort.
- You should schedule a veterinary appointment within the next 24 to 48 hours.
- Seek veterinary care immediately if you notice signs of severe infection, such as pus, a foul odor, lethargy, or if your cat is refusing food.
How does sending a photo of my cat’s skin help the veterinarian with triage?
- A clear, high-resolution photo allows the vet to assess the severity of inflammation, which can change rapidly or look different in varying light.
- Photos capture a specific moment in time, allowing the clinical team to identify patterns like crusting or localized swelling.
- This visual information helps the team determine the urgency of the visit and which diagnostic tests may be necessary upon arrival.
Clinical Context (Merck Veterinary Manual)
In cats, raw, red skin resulting from overgrooming, or self-mutilation, can be attributed to underlying medical problems causing pruritus or neuropathic pain. Common causes include infectious skin diseases (bacterial pyoderma, dermatophytosis), ectoparasites, allergic skin diseases (atopic dermatitis, food allergy, contact, insect hypersensitivity), and, less commonly, neoplastic skin diseases. Feline acquired symmetric alopecia, presenting as symmetric alopecia, is often a clinical sign of an underlying pruritic disease, with flea allergy dermatitis being a common cause. A comprehensive dermatologic examination is crucial to document lesion type and distribution, alopecia presence, and skin/coat characteristics to identify the underlying cause. Hyperpigmentation suggests chronic irritation from pruritus, infection, or inflammation.
Chapter: Behavioral Medicine, Dermatology, Neurology
Source: The Merck Veterinary Manual, 11th Edition (Page 1574)