Michael Douglas - Douglas Blasts Judge Over Son's 'Harsh' Jail Sentence

Cameron Douglas is currently serving a five-year prison term after being convicted of possessing methamphetamine with intent to distribute and one count of cocaine possession, relating to a drug bust in 2009.

He was recently given an additional four-and-a-half years for smuggling narcotics into his prison cell, and the judge overseeing the case also banned Cameron from receiving any family visits for two years.

However, his mother Diandra, who divorced the Hollywood actor in 2000, is furious about the sentence and has vowed to appeal.

She tells the New York Post's gossip column PageSix, "Cameron was used because of his famous last name to set an example of ruthless punishment... Humans - and certainly my son - are by their very nature in need of other human contact to maintain mental health...

"We will appeal this sentence... It is way too harsh and unjust. I have not been allowed to see Cameron for the past two months or speak to him. My only communication has been through the mail...

"Two years with no family visitation, with only one call out per month. The hope and love that Cameron receives from his family visits, I believe, is what sustains him through these unbearable times... We boost his self-esteem, of which he has been totally robbed."