This is Dr. David
he could be having vasculitis causing swollen blue fingers on his left hand.
intravenous drug use and injection of drugs can cause injection of small pieces which can block blood vessels which can mimic vasculitis
this is an article about it.
hopefully the blockage will pass.
he does need to go to the ER
it sounds like he is still injecting drugs at this point. he could be trying to crush up pills and inject them if he is despirate to get heroin in his system
he might benefit from getting treatment with naltrexone
let me know if you have other questions.
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