There were many long-term effects of the World War I, some of which included shellshock syndrome, also known as neurosis, battle fatigue, post-traumatic stress disorder (PTSD), birth defects and radiation sickness. The war veterans suffered on the battlefield and afterwards because they needed long-term care due to the psychological and the physical impact of the war.
During the war, people lived in close proximity, and the effects of this proximity were noticed afterward when people started suffering from health conditions such as tuberculosis. Other conditions, such as heart disease and asthma, occurred as a result of the exertion of the battle. The trenches that were filled with water during the war led to trench foot, a foot infection caused by wet and dirty conditions.
Shellshock syndrome was closely associated with the first world war, and it was caused by the effects of the loud shelling during the war. However, it was observed that some soldiers who had not experienced the loud shelling were also developing similar symptoms. During World War II, many soldiers were being recruited for the war, but many showed high levels of stress from the previous war, a condition known as battle fatigue.