1. Aortic Dissection
(an abnormally low volume of blood circulating in the body) A variety of noninvasive tests may be performed to confirm or rule out a diagnosis of an aortic dissection: Diagnosis methods for aortic dissection.
http://yourtotalhealth.ivillage.com/aortic-dissection.html?pageNum=5

2. Dehydration in Children Causes, Symptoms, Diagnosis, and Treatment on eMedicineHealth.com
Dehydration in Children Causes, Symptoms, Diagnosis, and Treatment on eMedicineHealth.com. Dehydration means that a child's body lacks enough fluid. Infants and small children are much more likely to become dehydrated than older children or...
http://www.emedicinehealth.com/dehydration_in_children/article_em.htm

3. THE MERCK MANUAL OF GERIATRICS, Ch. 67, Hyperthermia and Hypothermia -- Merck Co., Inc. Is A Glo...
Heat exhaustion results from depletion of fluids and electrolytes, which may occur during exertion or not. Diagnosis is by history and physical examination. Diagnosis is usually clear from the history and physical examination.
http://www.merck.com/mkgr/mmg/sec8/ch67/ch67a.jsp