Acute At first,<unk>  casualties were rapidly evacuated from the front line – in part because of fear of their unpredictable behaviour. As the size of the British Expeditionary Force increased, and manpower became in shorter supply, the number of<unk>  cases became a growing problem for the military authorities. At the Battle of the Somme in 1916, as many as 40% of casualties were<unk> ed, resulting in concern about an epidemic of psychiatric casualties, which could not be afforded in either military or financial terms. Among the consequences of this were an increasing official preference for the psychological interpretation of<unk> , and a deliberate attempt to avoid the medicalisation of<unk> . If men were 'uninjured' it was easier to return them to the front to continue fighting. Another consequence was an increasing amount of time and effort devoted to understanding and treating<unk>  symptoms. Soldiers who returned with<unk>  generally could not remember much because their brain would shut out all the traumatic memories. By the Battle of Passchendaele in 1917, the British Army had developed methods to reduce<unk> . A man who began to show<unk>  symptoms was best given a few days' rest by his local medical officer. Col. Rogers, Regimental Medical Officer, 4th Battalion Black Watch wrote: If symptoms persisted after a few weeks at a local Casualty Clearing Station, which would normally be close enough to the front line to hear artillery fire, a casualty might be evacuated to one of four dedicated psychiatric centres which had been set up further behind the lines, and were labelled as "NYDN – Not Yet Diagnosed Nervous" pending further investigation by medical specialists. Although the Battle of Passchendaele generally became a byword for horror, the number of cases of<unk>  were relatively few. 5,346<unk>  cases reached the Casualty Clearing Station, or roughly 1% of the British forces engaged. 3,963 (or just under 75%) of these men returned to active service without being referred to a hospital for specialist treatment. The number of<unk>  cases reduced throughout the battle, and the epidemic of illness was ended. During 1917,<unk> " was entirely banned as a diagnosis in the British Army, and mentions of it were censored, even in medical journals. Chronic treatment The treatment of chronic<unk>  varied widely according to the details of the symptoms, the views of the doctors involved, and other factors including the rank and class of the patient. There were so many officers and men suffering from<unk>  that 19 British military hospitals were wholly devoted to the treatment of cases. Ten years after the war, 65,000 veterans of the war were still receiving treatment for it in Britain. In France it was possible to visit aged<unk>  victims in hospital in 1960.
Shell shock
Cryptic shock
Neurogenic shock
Spinal shock
Septic shock
Surgical shock
Obstructive shock
Cardiogenic shock