Many agree that it doesn't describe a single disorder but a number of different symptom clusters.
Syndrome X is probably not a single disorder but a constellation of disorders with many different causes.
It is not a single disorder, but can be a symptom of several maladies, with different treatments.
It is a spectrum, not a single disorder, involving "a triad of impairments": difficulties with social communication, social interaction and social imagination.
"These are kids that have rage, anger, bubbling emotions that are just intolerable for them," Dr. Pavuluri said, "and it is good that this is finally being recognized as part of a single disorder".
A single disorder that met the scientific demands of the day, in other words, would only make the failure to meet them in the rest of the D.S.M. that much more glaring.
Coryell also noted that the melancholia proposal represented a departure from the notion, central to the D.S.M.'s descriptive method, that that the criteria for depression constitute a single disorder that every patient who matches the description has.
These similarities support the view that these groups suffer from a single disorder.
These requirements are often best fulfilled by larger epidemiological surveys unrestricted to a single disorder or set of disorders (see page 26).
The free vibration analysis of a finite mono-coupled periodic structure with a single disorder has been conducted by the characteristic receptance method, and the sensitivity of the natural frequencies to the disorder in flexibility has been discussed.
In order to differentiate migraine and vertigo as integral phenomena of a single disorder from simply co-morbid symptoms, Neuhauser et al. [1] developed criteria to define migrainous vertigo (MV) and classified it as definite MV and probable MV.
