<unk>  <unk>  is a disorder characterized by the presence of chronic, widespread pain and tactile allodynia. The criteria for this disease have not yet been thoroughly developed. The recognition that<unk>  involves more than just pain has led to the frequent use of the term<unk>  syndrome." It is not contagious and recent studies suggest that some people with<unk>  may be genetically predisposed. The disorder is not directly life-threatening. The degree of symptoms may vary greatly from day to day with periods of flares (severe worsening of symptoms) or remission; however, the disorder is generally thought to be non-progressive.
Fibromyalgia
Polymyalgia rheumatica
Eosinophilia myalgia syndrome
Complex regional pain syndrome
Myofascial pain syndrome
Malingering
Dermatomyositis
Chronic fatigue syndrome