My grandfather woke up from being asleep for about half

Patient: My grandfather woke up from being asleep for about half an hour and said he had a pain in the left side of his head and behind his eye and since then he was fiddling about with clocks and such but now he is laying in bed aa it is time to go to sleep I asked him how the pain was and he told me that the pain is almost not there what’s wrong?

Doctor: