I have chronic fatigue syndrome, dissociation, PTSD, and other issues. I can sometimes go days or weeks without showering or even brushing my teeth or hair. I smoke cigs and go outside to smoke, since I do not want my apartment to smell, and I rarely go out anywhere (almost always order in), so I feel no need to exert what little energy I have on grooming or showering, though I know I should. I am not diagnosed anymore with depression, but maybe I have a weird covert form of it. I do have chronic fatigue syndrome that has been diagnosed. I am too tired after a shower or any bit of exertion.