病毒感染后疲劳综合症 (PVFS)，也称之为Chronic Fatigue Syndrome (CFS)(慢性疲劳综合症)，这是一种病毒感染引起的综合症。
病毒感染后疲劳综合症的诊断：
1.症状超过6个月并排除了其它疾病。
2.有下列4种或4种以上症状;精神或记忆问题;喉痛;淋巴肿大;肌肉痛;多个关节痛;头痛;睡觉后不解乏;劳累超过24小时。
病毒感染后疲劳综合症 的症状比HIV更厉害，而且不象HIV一样有特效药治疗，传染性更强
HIV与CFS的区别：
HIV感染后，很多人没有症状，有症状的一般不会持续2周以上。CFS感染后(多种病毒)，很多人都有很多症状或慢慢出现很多症状，而且症状一直持续或反复发作。
CFS的起因，除了病毒感染外，可能和过渡的惊吓有关，病毒影响到脑神经。
至于孩子，即使感染了相同的病毒，我觉得不会造成CFS，这可能和孩子的免疫和精神有关。
Definition
A great deal of debate has surrounded the issue of how best to define CFS. In an effort to resolve these issues, an international panel of CFS research experts convened in 1994 to draft a definition of CFS that would be useful both to researchers studying the illness and to clinicians diagnosing it. In essence, in order to receive a diagnosis of chronic fatigue syndrome, a patient must satisfy two criteria:
Have severe chronic fatigue of six months or longer duration with other known medical conditions excluded by clinical diagnosis; and
Concurrently have four or more of the following symptoms: substantial impairment in short-term memory or concentration; sore throat; tender lymph nodes; muscle pain; multi-joint pain without swelling or redness; headaches of a new type, pattern or severity; unrefreshing sleep; and post-exertional malaise lasting more than 24 hours.
The symptoms must have persisted or recurred during six or more consecutive months of illness and must not have predated the fatigue.
The 1988 chronic fatigue syndrome (CFS) working case definition (Holmes, et al) did not effectively distinguish CFS from other types of unexplained fatigue. For this reason, it was decided during a 1993 meeting of CFS investigators to develop a logical revision of that definition. The ensuing effort led to the 1994 definition. Following years of use of the 1994 definition a working group prepared the following document:
Identification of ambiguities in the 1994 chronic fatigue syndrome research case definition and recommendations for resolution.
This publication addresses problems in applying the 1994 CFS Research Case Definition and recommends an approach to guide systematic reproducible application of the case definition in research studies. The article should also be helpful to health care professionals who care for persons with CFS.
Rationale for Revising the CFS Case Definition
The Revised Case Definition (abridged version)
Complete Text of Revised Case Definition as Published
Illustration of how patients are evaluated for CFS
Visual Graphics
Text Only
Screening Tests for Detecting Common Exclusionary Conditions
Other Commonly Observed Symptoms in CFS
In addition to the eight primary defining symptoms of CFS, a number of other symptoms have been reported by some CFS patients. The frequencies of occurrence of these symptoms vary from 20% to 50% among CFS patients. They include abdominal pain, alcohol intolerance, bloating, chest pain, chronic cough, diarrhea, dizziness, dry eyes or mouth, earaches, irregular heartbeat, jaw pain, morning stiffness, nausea, night sweats, psychological problems (depression, irritability, anxiety, panic attacks), shortness of breath, skin sensations, tingling sensations, and weight loss. These symptoms do not contribute to the diagnosis of CFS.
