Narcotics

Narcotics: (noun)
Narcotic analgesics attach to receptors on nerves in the brain, reducing the perception of pain, causing numbness and possibly, a state of unconsciousness. Most people take narcotic analgesics for short-periods of time until pain lessens or goes away.

But some of them have chronic pain, other kind of pain that doesn't go away so easily, leading to crave narcotics, or feel as if they can't go through the day without the desired substance, causing at the end, extreme addiction.

However, this person quickly develops a tolerance, which means that they will need a higher dose in order to achieve the desired effect.

But higher doses and prolonged use come with a much greater and dangerous risk, leading you to feel what you craved for your whole life, see the things you though you wouldn't see before your death and a gain meaning for your poor and miserable life. But the thing here is, do you think it is really real?