TL;DR: Overgrooming is usually a non-emergency sign of stress or skin irritation, but you should contact a vet if the skin becomes raw, infected, or if your cat shows signs of illness like lethargy.
What is cat overgrooming and what does it mean for my cat?
When a cat licks, bites, or pulls their fur until a bald patch appears—most commonly on the belly—it is known as overgrooming. In the veterinary world, this is often called psychogenic alopecia when caused by stress, or it may be a symptom of pruritus (itchiness). It indicates that your cat is experiencing either physical discomfort, such as an allergy or pain, or emotional distress.
Is cat overgrooming an emergency and when should I seek veterinary care?
The urgency level for a cat overgrooming their belly is generally Low, as this is typically a chronic issue rather than an acute crisis. However, you should schedule a veterinary appointment more promptly if you notice the following:
- The skin looks raw or is bleeding
- There is a foul odor coming from the area
- Your cat is lethargic or refusing food
- Signs of secondary skin infections are present
How does taking a photo of the area help with the triage process?
Taking a clear, high-resolution photo of the affected area is a vital step in the triage process. Visual evidence helps a veterinary professional determine if the issue is behavioral, parasitic, or allergic in nature by:
- Showing the exact pattern of hair loss
- Identifying the condition of the skin, such as redness, bumps, or crusting
- Allowing for an assessment without further stressing the cat through a physical examination
Clinical Context (Merck Veterinary Manual)
Excessive grooming in cats, particularly on the belly, leading to alopecia (hair loss), is often a clinical sign of an underlying pruritic disease, with flea allergy dermatitis being the most common cause. Other potential causes of pruritus or pain include infectious skin diseases (bacterial pyoderma, dermatophytosis), ectoparasites, allergic skin diseases (atopic dermatitis, food allergy, contact, insect hypersensitivity), and, less commonly, neoplastic skin diseases. Medical problems must be excluded as they can be responsible for excessive grooming, self-mutilation, and/or self-directed aggression, especially conditions causing neuropathic pain or pruritus, such as adverse food reactions or atopic dermatitis. A CBC with differential is recommended in cases without obvious flea infestation to investigate underlying medical conditions.
Chapter: Behavioral Medicine, Dermatology, Neurology
Source: The Merck Veterinary Manual, 11th Edition (Page 1574)