In-depth

Symptoms

Fatigue

Headache

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

Shortness of breath

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

Tests and diagnosis

Bone marrow biopsy

Complete blood count

A complete blood count can be used to evaluate your overall health, detect a wide range of disorders, or monitor a medical condition or treatment.

Genetic testing

Genetic testing is used to detect altered genes that may cause illness or disease. Although genetic testing can offer important health information, it has limitations.

April 10, 2014