What clinical signalment is most commonly seen in cases of steroid responsive meningitis-arteritis?

The clinical signalment most commonly associated with steroid responsive meningitis-arteritis is young dogs. This condition typically affects dogs between the ages of 6 months and 2 years. It is characterized by recurrent episodes of fever, neck pain, and neurological signs, and is often responsive to corticosteroid treatment. The young age at which this condition presents can be attributed to the breed predispositions, with certain breeds like Beagle, Boxer, and Bernese Mountain Dogs being more commonly affected.

Older dogs and aged cats are typically associated with other conditions such as degenerative or neoplastic processes that are not commonly responsive to steroids. Middle-aged cats, while they can experience various neurological issues, generally do not present with steroid responsive meningitis-arteritis, making young dogs the most accurate signalment for this condition.