General Hospital mainstay Leslie Charleson, who starred in over 2,000 episodes of the soap, died in January. But new documents show she may have been suffering from long-term effects of a head injury.

General Hospital star Leslie Charleson passed away last month at 79. She was the longest-running actor on the ABC soap, playing Monica Quartermaine since 1977 when she took over the role. Her death was shared by GH’s executive producer,

The cause of death of soap star Leslie Charleson, who appeared in over 2,000 episodes of ‘General Hospital,’ has been determined, reports TMZ