Question 1

Can Cushing's disease cause joint stiffness in dogs?

Accepted Answer

Yes — Cushing's disease (hyperadrenocorticism) causes elevated cortisol, which leads to muscle weakness, redistribution of body fat, and increased joint load. The resulting stiffness can mimic arthritis and the two often co-exist. Distinguishing between Cushing's-related stiffness and genuine osteoarthritis is important before starting supplementation — treating the Cushing's first often reduces the stiffness without the need for joint supplements.

Question 2

Should I wait for a Cushing's diagnosis before starting joint supplements?

Accepted Answer

The shopkeeper recommends waiting, particularly if the investigation is imminent. Starting a supplement before the diagnosis makes it harder to assess how much of the stiffness responds to Cushing's treatment versus joint supplementation. Once the Cushing's is diagnosed and treated for 8–12 weeks, a cleaner assessment of residual joint stiffness can guide supplementation decisions.

Joint supplement for a dog being investigated for Cushing's disease