What type of disease / disorder cause unselective blackouts?

It's not actually blackouts. Sometimes, i'll be watching TV, or intake, or reading - and all of a sudden everything go dark and i see solitary blackness (like a patch). It lasts for smaller quantity than a second and it is random (2 -3 times a day). (It's similar to staring into a blank TV screen). Is this a symptom for something severe?What type of disease / disorder cause unselective blackouts?
could be low sugar or seizure, you do involve to see a doctor, you don't want to be behind the pedals when this happens
no clue could be anything,
Ummm...step to a doctor. This could indicate anything from something minor (like weird migraines or frenzy attacks) to epilepsy or cancer.
Yes, you could be having seizure or some kind of progressively degenerative brass neck disorder, or even a brain tumor. GO SEE YOUR DOCTOR, maybe it's lately a hormonal problem.THE DOCTOR WILL KNOW