Dyspnea

Dyspnea, also called air hunger or shortness of breath, is a symptom of ME/CFS.

Prevalence

 * 79.2% - 83.5% of the 2073 patients in a Belgian study of 2001 reported dyspnea after exertion.
 * Katrina Berne reports a prevalence of 30-70% for shortness of breath.

Symptom recognition
Exertional dyspnea is noted as a symptom of the autonomic nervous system in the Canadian Consensus Criteria, and is included in the criteria for diagnosis of CFS.

It is also included in the criteria for diagnosis in the International Consensus Criteria, under Energy production/transportation impairments.

It is not described in any other definitions.

Notable studies

 * Dyspnea in Chronic Fatigue Syndrome (CFS): comparison of two prospective cross-sectional studies.

Potential treatments

 * Breathing techniques
 * Buteyko method
 * Cordyceps
 * Antacids
 * Betaine HCL