I’m pretty sure it can still be dpdr. I have so so much fatigue, and I think it’s normal when you deal with this considering how overwhelming it can be. When I google it anyways it says it’s a very common symptom associated with anxiety, panic disorder, stress, depression and other mental disorders. Especially dpdr which technically is the body’s defence mechanism, the mind and body is in constant state of high alertness and tension.
Are you have any weak muscle ? Legs and arm or hand ??