Yes, headache can cause broken blood vessel in eyes. Headache can be divided into two sorts: one is the common cephalagra without omen, another is the cephalagra accompanied by omens. The cephalagra with omens can be divided into two periods: the foreboding period and the headache period. In the foreboding period, the symptoms of visual sense are common such as photophoby, flash of light before eyes, eye delusion, afterwards appear visual field defect, dark spot, partial blindness or temporary blindness. The headache manifests after the omens begin to diminish. Pain begins in an orbit or back of orbit, then it spreads to the head and neck. With the degree of headache increases, some manifest flushing face with a large number of sweat and conjunctiva hyperemia while some manifest pale face with drooping spirit. Usually, after taking a good sleep, headache is relieved and bloodshot eyes gone.