noun
economy class syndrome
Medical term for deep vein thrombosis occurring during long-haul air travel, especially in cramped economy class seats. Also used more broadly for travel-related thrombosis.
See also: 深部静脈血栓症 (しんぶじょうみゃくけっせんしょう)
長時間のフライトでは、エコノミークラス症候群に注意が必要です。
On long flights, you need to be careful about economy class syndrome.
エコノミークラス症候群を予防するために、機内では水分をこまめに取り、軽い運動をしましょう。
To prevent economy class syndrome, drink water frequently and do light exercises during the flight.