Head Neck Pain Left Side What Can Cause Pain In The Head On The Left Side That Moves From Neck To Temple And Causes A Black Out?

What can cause pain in the head on the left side that moves from neck to temple and causes a black out? - head neck pain left side

My husband was hurt in the shower and neck. He said he could move the pain, feel his temple on the left side. He woke up on the floor of the tub with a drooping eyelid on the left side and pain on the right side. After stunning, the next night, she found three pieces on the scalp.