The first cases of the 1983 West Bank fainting epidemic begin; Israelis and Palestinians accuse each other of poison gas, but the cause is later determined mostly to be psychosomatic.

In late March and early April 1983, large numbers of Palestinians in the West Bank complained of fainting and dizziness, the vast majority of whom were teenage girls and a smaller number of whom were female Israeli soldiers. The symptoms led to 943 hospitalizations. Investigators concluded in April 1983 that the wave of complaints was likely the result of mass psychogenic illness, even if some environmental irritant had originally been present. This conclusion was supported by a Palestinian health official, who said that 20% of the early cases may have been caused by the inhalation of some kind of gas, but the remaining 80% were psychosomatic.

Israel, officially the State of Israel, is a country in the Southern Levant region of West Asia. It shares borders with Lebanon to the north, Syria to the north-east, Jordan to the east, Egypt to the south-west and the Mediterranean Sea to the west. It occupies the Palestinian territories of the West Bank in the east and the Gaza Strip in the south-west, as well as the Syrian Golan Heights in the northeast. Israel also has a small coastline on the Red Sea at its southernmost point, and part of the Dead Sea lies along its eastern border. Its proclaimed capital is Jerusalem, while Tel Aviv is its largest urban area and economic centre.

Palestine, officially the State of Palestine, is a country in West Asia. Recognized by 147 of the UN's 193 member states, it encompasses the Israeli-occupied West Bank, including East Jerusalem, and the Gaza Strip, collectively known as the occupied Palestinian territories. The territories share the vast majority of their borders with Israel, with the West Bank bordering Jordan to the east and the Gaza Strip bordering Egypt to the southwest. It has a total land area of 6,020 square kilometres (2,320 sq mi) while its population exceeds five million. Its proclaimed capital is Jerusalem, while Ramallah serves as its de facto administrative center. Gaza City was its largest city prior to evacuations in 2023.