Shannen Doherty Begins Radiation Therapy: 'I Hate It'

The actress is in treatment for breast cancer.

On Monday, the former "Beverly Hills, 90210" actress shared a photo of herself online and updated her followers about her treatment.

The treatment, she wrote, was unpleasant.

"First day of radiation treatment. I look like I'm about to make a run for it which is accurate," she wrote. "Radiation is frightening to me. Something about not being able to see the laser, see the treatment and having this machine moving around you just scares me. I'm sure I'll get used to it but right now.... I hate it. #radiation #radiationmondaysucks #stillfightinglikeagirl"