In-depth

Headache

Most headaches aren't caused by a serious illness, but some could be a sign of a life-threatening condition.

Insomnia

Sleepless nights? Insomnia includes difficulty going to sleep, staying asleep or going back to sleep after you awaken. Insomnia may be temporary or chronic.

Polysomnography (sleep study)

Polysomnography is an overnight sleep study used to diagnose sleep apnea and other sleep disorders.

Shortness of breath

Shortness of breath can be frightening. Most of the time, a heart or lung condition is the cause.

Jun. 28, 2013

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