On grams per week for long periods of time will destroy your liver and kidneys, its the price you pay for blasting...
I've known a few guys get abscesses, I honestly believe its from dirty gear 90% of the time.. But frequent volume into same area could as you found out do the same
I hope you recover and see the light, no point killing your self unless your chasing the dream, you wont think it now, but tho is probly the bed thing that happens to you, you've saved your self from dialysis/ liver failure
I had similar situation, was chasing a top 5 heavy finish, around your age, tore both my hamstrings, pec, knee and ac joint all in 6 month, went from 19st with abbs to 16 and soft... I was just starting to up my doses from moderate to heavy, looking at slin etc etc... I'm glad I hurt my self id be half way to the grave by now