I suffer from chronic PTSD and chronic depression too, the same difficulties similar to yours and put off taking a shower/bath as long as I can. Just once a week seems the best I can do it is a HUGE effort to do such a simple thing. Have you tried sponge baths? Body wipes are available to promote good hygiene which makes it much much easier. Also, an emergency necklace will offer you safety when you're in distress. I hope this helps. God bless you!