Hypervigilance can cause fatigue guys. PTSD can cause fatigue, anxiety and depression can cause fatigue, Bipolar can cause fatigue, any and all mental illnesses can.
Please understand if youre mentally ill and physically or emotionally fatigued, that is not you being lazy! It is your body and brain being tired of fighting your illness! You are tired because youve been fighting.
This struggle you are going through is real, please do not let yourself or anyone invalidate you further by saying youre lazy.