I'm really struggling atm with things that should be basic but feel like a mountain.
I've always had trouble with showering. I cant shower alone as I have to scrub every inch of my body and can't reach my back so I get my fiancee to do it. (Never been able to reach the middle of my back)
When I scrub I have to do it with a hard bristle brush and scrub 3-4 times until my skin is red.
I have to use talcum powder after every shower or I feel sticky, greasy, itchy, and my clothes feel so uncomfortable and irritating.
If I feel horrible after my shower I scratch the skin off my body and then have a breakdown because I didn't get all the excess skin off.
I'm moving 5 hours away for a job trial and know I'm going to have to do this alone for 3 months and its making my anxiety so bad to the point I'm having attacks and breakdowns. All because I cant do something as simple as shower by myself. I know this is so bad for me and my relationship as I've become too dependent on my partner. 
I feel like such a failure and so useless that I can't do something so simple. 
Before I met my partner my MH was so bad I hadn't showered properly in over 6 months. I would wash my hair once a week-fortnight and use a baby wipe each day under my arms, breasts and privates.
I got to the point I was showering at least once-twice a week but have gone downhill and now it's back to once a week, sometimes fortnightly.
I hate myself and just want to be able to have a shower without freaking out. Its incredibly frustrating because 95% of the time I love how my skin feels after a shower when its dry and powdered.

Has anyone else struggled with this or similar?
How did you get past it?