left eye. He also reportsthat his left eye seems toswell and get teary whenthese headaches occur.Based on this history, yoususpect that he hasa. cluster headaches.b. tension headaches.c. migraine headaches.d. medication overuseheadaches.sharp and stabbing; the intense pain lasts afew minutes to 3 hours. Cluster headachescan occur every other day and as often aseight times a day. The clusters occur withregularity, usually occurring at the sametime each day and during the sameseasons of the year. Typically, a clusterlasts 2 weeks to 3 months, and the patientthen goes into remission for months toyears. The pain usually is located aroundthe eye and radiates to the temple,forehead, cheek, nose, or gums. Othermanifestations may include swelling aroundthe eye, lacrimation (tearing), facial flushingor pallor, nasal congestion, andconstriction of the pupil. During theheadache, the patient is often agitated andrestless, unable to sit still or relax.A 65-year-old womanwas just diagnosed withParkinson's disease. Thepriority nursingintervention isa. searching the Internetfor educational videos.b. evaluating the homefor environmental safety.c. promoting physicalexercise and a well-balanced diet.