Over the last year or two , I found myself even sleepier : spending entire weekend days asleep , and ultimately not feeling refreshed . Something was wrong . I went to my doctor , who did a bunch of blood tests and ultimately referred me to the Sleep Disorders Program at a local medical institution .

Options: (i) They had been diagnosed with narcolepsy . (ii) They have been excessively sleeping . (iii) They needed medication for their medical condition . (iv) They have had a sleeping disorder their whole life .
Answer the following question: What may be the reason for their visit to the doctor ?
(ii)