More severe and frequent disturbances result in longer recovery times.

This competition between two images that can be focused may cause headache and other severe disturbances.

How sad that it takes violence and severe emotional disturbances to make their voices heard.

They calculated that severe disturbances occurred in the man's 9th, 15th and 16th years.

But for every death there are at least 100 other people who suffer severe mental disturbances.

Hurricanes are the most severe climatic disturbance in this area and have been known to cause extensive damage.

Supposedly the Federal can intervene if there's severe civil disturbance.

But this seems to be a severe disturbance and it's come up very suddenly.

When mountains interrupted the normal flow, severe disturbances could result, and these were called tempests.

"I view it as a severe disturbance from the forest point of view."