[header] How to fight depression linked to psoriatic arthritis [title] Pay attention to your energy levels. [step] Fatigue is a common symptom of psoriatic arthritis, but it can also be a sign of depression. If you've been feeling more tired than usual lately, it doesn't necessarily mean you're depressed. 
However, it's a good idea to be alert for any other warning signs. [title] Notice whether your mood is lower than usual.