anxiety

When mixed with alcohol, the anti-anxiety drug's effects are intensified and breathing can be impaired.

... or impedes development for children, something's wrong. Online games can be particularly consuming because players are ... to manage anxiety.

Other people might use online gaming or social media sites to escape from ...

Maybe it was anxiety over his upcoming comeback concert series. Perhaps his body was trying to process too many different medications.

The reason may never be known, but a sworn affidavit makes clear that Michael Jackson couldn't get rest the night before he died.