McConaughey is typically an outgoing, seemingly happy presence.
“What’s wrong with Matthew McConaughey?
Why does he look so spooked?

“Wherever he is, it looks like he doesn’t want to be there,” anothersurmised.
A few days later, McConaughey appeared on"Good Morning America"still looking a bit different.
Once again, he seldom smiled.

In this case, though, the serious subject matter he was discussing may have been the reason why.