TL;DR: Over-grooming of the lower belly is typically caused by stress or physical irritation and is rarely an emergency unless the skin shows signs of infection like oozing or bleeding. Document the area with photos and schedule a routine veterinary exam to determine the underlying cause.
What causes my cat to over-groom their lower belly?
When a cat licks or chews their lower abdomen until the skin is bald, it is often referred to as psychogenic alopecia or over-grooming. This behavior is usually a response to either physical discomfort, such as itchy skin from allergies or parasites, or emotional distress, such as anxiety and boredom. Cats often use grooming as a self-soothing mechanism, which can unfortunately lead to significant fur loss and skin irritation.
Is my cat's over-grooming a medical emergency?
- Over-grooming is usually a chronic issue with a low urgency level rather than an acute medical emergency.
- Schedule a routine appointment with your veterinarian to investigate underlying causes.
- Seek more prompt attention if the skin is bleeding, oozing, or smells foul, as this may indicate a secondary infection.
How does taking a photo of the affected area help with triage?
- Provides a clear view of the hair loss pattern and skin condition for an initial assessment.
- Allows the vet to see the area without the cat hiding or grooming during a physical exam.
- Serves as a baseline to track whether the bald patch is growing or if new hair is starting to sprout during treatment.
Clinical Context (Merck Veterinary Manual)
In cats presenting with over-grooming of the lower belly, underlying medical problems that cause pruritus or pain must be excluded. Potential 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. Neuropathic pain or pruritus stemming from conditions such as adverse food reactions, atopic dermatitis, and parasitic hypersensitivity can manifest as self-mutilation, excessive grooming, and/or self-directed aggression. Flea allergy dermatitis is a common cause of symmetric alopecia; a complete blood count with differential is recommended, even in the absence of obvious flea infestation. It is important to recognize that licking may be a sign of pruritus.
Chapter: Behavioral Medicine, Dermatology, Neurology
Source: The Merck Veterinary Manual, 11th Edition (Page 1574)