Another theme that emerged strongly was that achieving diagnosis and acknowledgement requires tremendous amounts of "hard work" by patients. Blood donation
In 2010, several national blood banks adopted measures to discourage or prohibit individuals diagnosed with CFS from donating blood, based on concern following the 2009 claim of a link, between CFS and a retrovirus which was subsequently shown to be unfounded. Organizations adopting these or similar measures included the Canadian Blood Services, the New Zealand Blood Service, the Australian Red Cross Blood Service and the American Association of Blood Banks, In November 2010, the UK National Blood Service introduced a permanent deferral of donation from ME/CFS patients based on the potential harm to those patients that may result from their giving blood. Donation policy in the UK now states, "The condition is relapsing by nature and donation may make symptoms worse, or provoke a relapse in an affected individual." Controversy
Much contention has arisen over the cause, pathophysiology, nomenclature, and diagnostic criteria of CFS. Historically, many professionals within the medical community were unfamiliar with CFS, or did not recognize it as a real condition; nor did agreement exist on its prevalence or seriousness. Some people with CFS reject any psychological component.In 1970, two British psychiatrists, McEvedy and Beard, reviewed the case notes of 15 outbreaks of benign myalgic encephalomyelitis and concluded that it was caused by mass hysteria on the part of patients, or altered medical perception of the attending physicians.
Systematized epidermal nevus is a cutaneous condition, an epidermal nevus with a diffuse or extensive distribution involving a large portion of a persons body surface. : 771

See also
Linear verrucous epidermal nevus


== References ==