TL;DR: Finding maggots in your cat’s ear is a painful medical emergency called myiasis that requires immediate veterinary care to prevent tissue damage and systemic infection.
What does it mean if there are maggots in my cat's ear?
Finding maggots in your cat's ear is a condition known as myiasis. This occurs when flies are attracted to a wound, infection, or accumulated discharge within the ear canal and lay their eggs there. Once these eggs hatch, the larvae (maggots) begin to feed on the surrounding tissue, which can lead to significant damage to the ear's delicate structures.
Is finding maggots in my cat's ear a medical emergency?
- Yes, this is a high-priority medical emergency. You should contact an emergency veterinarian immediately.
- Myiasis is extremely painful and can lead to larvae rapidly migrating toward the eardrum or into the middle ear.
- Potential complications include permanent hearing loss, neurological issues, systemic illness, or severe secondary infections.
How does taking a photo of my cat's ear help with triage?
- Taking a quick, clear photo allows the triage staff to assess the severity of the infestation and the condition of the surrounding skin before you arrive.
- This helps the veterinary team prepare the necessary sedation, cleaning equipment, and medications in advance.
- Providing a photo ensures your cat receives the fastest possible care while not delaying your trip to the clinic.
Clinical Context (Merck Veterinary Manual)
Definitive diagnosis of myiasis is made by finding and identifying the larva. In cats, CT scans may help identify larvae. Second instar larvae are 5-10 mm long and gray to cream in color. Third instar larvae are dark, thick, heavily spined, and most commonly seen by veterinarians. Suspect lesions should be explored by carefully enlarging and probing the breathing pore or fistula with mosquito forceps. Covering the breathing pore with white petroleum jelly for 10-15 minutes before grasping the parasite can make removal easier. The lesion should not be squeezed, because this may rupture the larva, leading to a chronic foreign body reaction and secondary infection; anecdotal reports exist of larval rupture causing anaphylaxis. Antibiotics should be prescribed.
Chapter: Neurology, Parasitology
Source: The Merck Veterinary Manual, 11th Edition (Page 880)