Acne on shoulders big time. I find that regular washing (w/ dilluted peroxide soloution) and sunbeds help a bit.
For hair loss use Finastride.
For water retention, cut down sodium (and glutamine?) products and drink more water. Diuretics will help short term.
Insomnia is common (not in me!). Some bb's use diazapam. Not the best drug as it's duration is too long, you will not feel with it the next day. Instead, I have found three drugs effective, in order of next day 'hangover' (least first).
Zopiclone, 7.5mg, noct.
Promethaziane, 50mg, nocte
Flunitrazepam, (can't remember dose, but 1-2 tabs), nocte
BP, PERHAPS, heparin MIGHT help (18,000 units sub-c) or Asprin (75mg pd).
Hope this helps!