Lindsay Lohan was photographed with red marks on her wrist last night, reigniting rumours she self-harms.

The actress revealed what appeared to be fresh cuts on her left arm as she chatted on her cell phone while being driven home by girlfriend Samantha Ronson.

The pair had spent the evening at Villa night club in West Hollywood.

Lindsay's suspected self-harming first made the headlines in 2006 when she attended the World Music Awards with cuts and scars along her arm, as well as a burn in the shape of a figure eight.

Then in September last year she showed up to the Ugly Betty premiere with a series of faint scars on her left arm.

An unnamed source said at the time, “Lindsay has locked herself in the bathroom and cut herself in the past. Sam is aware of this and has hidden razors from Lindsay.

“Her parents found out that she was hurting herself again about two months ago and even started planning an intervention. But it never took place because Lindsay got wind of it and her mom, Dina, backed down.”

See Lindsay's weight loss diary below