He has been in and out of rehab, suffered from a suspected heroin overdose, admitted to addictions to cocaine and heroin and been arrested for DUIs, public intoxication and violating a restraining order filed by estranged wife Rachael Bella.
Just in the past few months, he has been arrested twice for domestic violence against his ex-girlfriend Monica Keena.
These arrests, plus violating a protective order Keena has against him, has led to Furlong being sentenced to 180 days in jail, reports TMZ.
The sentence stems from his probation from 2010, which requires that Furlong obey all laws during the course of his three-year probation.
That 2010 probation was put in place after he violated a protective order by his estranged wife, the aforementioned Rachael.