Post-concussion syndrome
Post-concussion syndrome, also known as postconcussive syndrome or PCS, is a set of symptoms that may continue for weeks, months, or a year or more after a concussion – a mild form of traumatic brain injury (TBI). The rates of PCS vary, but most studies report that about 15% of individuals with a history of a single concussion develop persistent symptoms associated with the injury. A diagnosis may be made when symptoms resulting from concussion last for more than three months after the injury. Loss of consciousness is not required for a diagnosis of concussion or post-concussion syndrome.
Precordial catch syndrome
The Huchard syndrome was then studied more deeply by Miller and Texidor, medical practitioners at the Cardiovascular Department and the Department of Medicine at the Michael Reese Hospital in Chicago, in 1955. They reported the condition in 10 patients, one being Miller himself. In 1978, PCS was discussed by Sparrow and Bird who reported that 45 healthy patients suffered from it and that it was probably more frequent than generally assumed. PCS in American children has been discussed by Pickering in 1981 and by Reynolds in 1989. These constitute the literature available in English on PCS.