Butch Patrick Played Eddie Munster on 'The Munsters' (AP Photo/CBS)

Former child star Butch Patrick, who played were-boy Eddie Munster on ‘The Munsters,’ has entered rehab “to deal with a lifetime problem of substance abuse,” TMZ reports.

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Patrick, 57, checked himself into a New Jersey rehab facility on Wednesday to seek treatment for a 40-year addiction to cocaine, marijuana and alcohol.

A rep for the actor tells the web site: “We have thought he could possibly be a product of the child star problem … and are thankful he will take control of his fate.” His friends and family are supportive and “very happy” he is finally taking measures to “get a grip on his addiction and educate himself.”

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‘Eddie Munster’ made less haunting headlines in August when it was reported that Patrick was engaged to a longtime fan of the classic TV show. However, his fiancee announced last week that the couple has split, according to the AP.