Actress Shannen Doherty preempts breast cancer hair loss by shaving her head

Shannen Doherty, with pre-cancer treatments haircut in process.

Suddenly, actress Shannen Doherty is bald.

Temporarily, at least.

She’s shaved her head while fighting breast cancer, according to a recent Associated Press story in the Washington Times.

The 45-year-old Doherty posted six black-and-white photos on Instagram that showed her lopping off her locks, preceded by another picture with a caption carrying the phrase #cancersucks.

Her cancer initially was disclosed in a lawsuit filed last year against her ex-business managers.

It alleged that they caused her health to deteriorate while they mismanaged her money. She charged in the suit that her cancer went undetected because she put off going to a doctor when they let her insurance lapse.

Doherty gained fame in a four-year stint as Brenda Walsh on “Beverly Hills 90210” — but even greater notoriety as being someone extremely difficult to work with.

The actress — who maintains she’ll probably be unable to have children because of her cancer treatments — has signed to do a television series based on the 1995 Kevin Smith movie, “Mallrats.”

She’s also said she’s prepared to have a mastectomy if other treatments fail.

You can learn about the psychological damage of hair loss in “Rollercoaster: How a man can survive his partner’s breast cancer,” a VitalityPress book I, Woody Weingarten, aimed at male caregivers.