TL;DR: Skin tags on a cat's ear are typically benign and harmless growths that do not require emergency care unless they change rapidly or cause irritation. Monitoring the site and providing a photo to your vet can help determine if a routine professional evaluation is needed.
What does a skin tag on my cat's ear look like and is it harmful?
A skin tag, or acrochordon, is a benign growth typically consisting of collagen and blood vessels covered by skin. On a cat’s ear, these often appear as small, flesh-colored, or slightly pigmented protrusions that may hang by a thin stalk. While common in older cats, they are generally harmless and do not cause pain unless they become snagged or irritated.
Is a skin tag on my cat's ear considered a veterinary emergency?
- The urgency level for a small, stable skin tag is Low.
- If the growth is not bleeding, has no discharge, and is not bothering your cat, it does not require an emergency visit.
- Monitor the area for changes in shape, color, or size.
- Schedule a routine appointment for a professional evaluation if the growth changes rapidly or if your cat scratches it until it bleeds.
Why should I take a photo of the growth on my cat's ear for the triage process?
- Capturing a clear, high-resolution photo of the ear growth is an essential step in determining the urgency of care.
- A photo allows a veterinary professional to visualize the base of the growth to help distinguish a simple skin tag from a tick, a wart, or a more concerning mass.
- Visual information helps your vet determine how soon your cat needs to be seen and whether a physical biopsy or fine-needle aspirate is necessary.
Clinical Context (Merck Veterinary Manual)
Small, benign skin tags on a cat's ear can arise due to several factors. Longterm glucocorticoid therapy or solar radiation damage can cause folded ear tips. Feline solar dermatitis, common in white cats or those with white pinnae chronically exposed to sun, initially presents as erythema and scaling on the sparsely haired tips of the ears and may progress to crusting, exudation, and ulceration as actinic keratosis transforms into squamous cell carcinoma. Arthropod bites, such as from ticks, can also cause dermatitis of the pinnae, leading to irritation. The spinous ear tick (*Otobius megnini*) can parasitize the external ear canal, causing clinical signs such as head shaking, head rubbing, or drooped pinnae.
Chapter: Otolaryngology, Infectious Disease
Source: The Merck Veterinary Manual, 11th Edition (Page 535)