 Which of these is NOT said to be a cause for headaches?
"I would have said the common cold," Macklin replied, "but I suppose from what you have said you mean headaches." "Aspirins would still be used to reduce fever and relieve muscular pains," Mitchell said. "There are a number of different causes for headaches—nervous strain, fatigue, physical diseases from kidney complaints to tumors, over-indulgence—but there is one effect of all of this, the one real cause of headaches," Mitchell announced. When I start making slips like that it means another attack of migraine. By established periodic cycle he should be suffering hell right now, shouldn't he? "Most known narcotics," she admitted, "but evidently you have discovered something new.
 UV rays
 nervous strain  fatigue  over-indulgence  UV rays