

They can have the same effect when you quit after having used them for a long time.Īlzheimer’s disease and other kinds of dementia. Heavy drinking and certain street drugs, like ecstasy, cocaine, and LSD, can cause you to see anything from flashes of light to people.

Why It Might Happenįrom mental illness to quirks in how you sleep, there are a lot of reasons you may be seeing things.Īlcohol and illegal drugs. That’s the first step toward getting better. So if it’s happening to you, talk to your doctor.

It’s called a visual hallucination, and it can seem like your mind is playing tricks on you.īeyond being scary or stressful, it’s also usually a sign that something else is going on. When you’re sure you’ve seen something, then realize it’s not actually there, it can jolt you.
