The vast majority of doctors have absolutely no idea what it is or what it looks like, and no routine lab tests, MRI, CT scan, x-ray or anything of that nature will detect it. 75% of people with
narcolepsy never get diagnosed
in their lifetime.
It doesn't look the way you think it looks. Common misdiagnoses are depression, epilepsy, and migraines. I struggled for years to find an answer, and was misdiagnosed several times.