Temporomandibular joint (TMJ) disorder affects a cat’s ability to chew, bite, and eat. The TMJ is a hinge-like joint connecting the lower jaw (mandible) to the skull's temporal bone, facilitating essential functions such as chewing, vocalizing, and grooming. TMJ disorders directly impact jaw movement and can lead to significant discomfort.

How it Spreads: TMJ disorders in cats can arise due to various factors, including trauma, congenital abnormalities, infections, inflammatory conditions, and tumors affecting the joint. Dislocations, osteoarthritis, and joint fusion (ankylosis) are common causes that impact a cat’s ability to move its jaw normally.

Who is at Risk: Cats of all ages can develop TMJ disorders. However, those that experience facial trauma, have congenital jaw abnormalities, or suffer from inflammatory joint diseases are at higher risk. Additionally, older cats may be more prone to degenerative joint diseases like osteoarthritis.

Signs in Cats: Symptoms of TMJ disorder in cats may include:

• Difficulty opening or closing the mouth
• Misaligned teeth or jaw
• Excessive drooling
• Reluctance to eat or chew food
• Swelling or pain around the jaw
• Audible clicking or popping sounds when moving the jaw

Symptoms in People: Unlike zoonotic diseases, TMJ disorder in cats does not pose a direct risk to humans. However, cat owners should monitor their pets for any signs of discomfort and seek veterinary attention if symptoms arise.