Ear Problem Severity Comparison
| Feature | Ear Mites (Psoroptes cuniculi) | Head Tilt (Torticollis) |
|---|---|---|
| Cause | Mite infestation in ear canal | Inner ear infection, E. cuniculi, stroke, trauma |
| Symptoms | Head shaking, scratching, crusty ear scabs | Head tilted >45°, circling, loss of balance |
| Onset | Gradual (1–2 weeks) | Sudden (hours–days) |
| Pain Level | Moderate (itchy, uncomfortable) | High (possible severe pain) |
| Contagious? | Yes — spreads to other rabbits | No (unless E. cuniculi) |
| Urgency | Non-emergency (but treat promptly) | 🚨 EMERGENCY — see vet same day |
| Treatment | Ivermectin drops, 2–3 doses 10–14 days apart | Antibiotics, anti-inflammatories, supportive care |
Ear Problem Triage Flow
Rabbit Ear Health Checklist
| Do | Check ears weekly for crusts, discharge, or head shaking |
| Do | Treat ear mites promptly with vet-prescribed ivermectin |
| Do | Clean enclosure thoroughly after mite treatment to prevent reinfection |
| Do | If head tilt appears: vet within hours, not days |
| Do | Keep rabbit confined and safe during head tilt recovery |
| Do | Provide shallow food/water bowls for head-tilt rabbits |
| Avoid | Ignoring crusty ears — they spread to other rabbits |
| Avoid | Waiting to see if head tilt resolves on its own |
| Avoid | Using over-the-counter mite treatments meant for dogs/cats |
Ear problems in rabbits divide into two distinct categories with very different causes and urgency: ear mites (Psoroptes cuniculi), which cause uncomfortable but not immediately life-threatening scab formations in the ear canals; and head tilt (torticollis), which is a neurological or vestibular emergency that can indicate inner ear infection, Encephalitozoon cuniculi (E. cuniculi) brain parasite, or stroke-like events. A rabbit scratching its ears vigorously needs a vet appointment soon. A rabbit with a head acutely tilted at 30 to 90 degrees and rolling needs an emergency vet today.
Ear Mites (Psoroptes cuniculi)
Psoroptes cuniculi mites live in the external ear canal and cause thick, tan-to-brown crusty exudate (the classic "canker") that begins in the ear canal and spreads to the inner ear pinna in heavy infestations. Rabbits scratch vigorously, shake their heads, and hold the affected ear lower. The crusts are painful; attempted removal without veterinary treatment is not recommended because the crusts are adherent to inflamed tissue and forcible removal causes bleeding and further inflammation.
Diagnosis is clinical on examination. Treatment: ivermectin (0.2 to 0.4 mg/kg subcutaneously or orally, two doses 14 days apart) is highly effective and the standard treatment. Selamectin (Revolution) topically on the skin between the shoulder blades at 10 to 15 mg/kg is an alternative. After treatment, the crusts loosen and fall out within 2 to 3 weeks without manual removal. Treat all in-contact rabbits simultaneously; P. cuniculi spreads by contact. Clean the enclosure thoroughly; mites do not survive off the host more than 7 to 10 days but enclosure cleaning during treatment prevents reinfection.
Head Tilt: A Different Emergency
Head tilt (torticollis) in rabbits presents as rotation of the head along the longitudinal axis -- anywhere from a slight 5 to 10-degree tilt to a 90-degree rotation where one ear points toward the floor. Severe cases show rolling: the rabbit rolls continuously in one direction and cannot right itself. Rolling rabbits are extremely distressed; remove objects from the enclosure where rolling could cause injury and contact a veterinarian immediately.
Common causes: (1) Encephalitozoon cuniculi (E. cuniculi) -- a microsporidian intracellular parasite that forms granulomas in the brain and kidneys; the most common cause of sudden-onset head tilt and vestibular signs in rabbits. Treatment: fenbendazole (20 mg/kg orally daily for 28 days) is the standard protocol; damage already caused by granulomas may be permanent but progression can be arrested. (2) Bacterial inner ear infection (otitis interna) -- Pasteurella multocida, E. coli, and Pseudomonas are common pathogens; CT or MRI of the skull is diagnostic; treatment requires long-term antibiotics (6 to 12 weeks). (3) Vascular event ("rabbit stroke") -- sudden onset head tilt from cerebral ischemia; supportive care with anti-inflammatory drugs and time are the treatment.
Regardless of cause, head tilt rabbits require same-day veterinary evaluation. Supportive care at home while arranging veterinary transport: keep the rabbit in a small padded enclosure to prevent rolling injuries, offer food and water at the rabbit's accessible height, and keep the environment quiet and calm.
Sources: Quesenberry KE et al., "Ferrets, Rabbits, and Rodents" 4th edition (2021); Harcourt-Brown F, "Textbook of Rabbit Medicine" (2002); E. cuniculi treatment protocols from House Rabbit Society veterinary committee.