Uninhibited alcohol consumption often resulting in pregnancy and/or VD. Known to be contracted in/around Khao San Road after numerous Changs and/or buckets of Samsung, Coke, and Redbull. Symptoms of Bangkok Fever are memory loss, multiple bruises, and shame.
"Damn, I just went to the doctor after my trip to Bangkok and realized I've got a bad case of the herp. It must be a result of my Bangkok fever which forced me to mingle with all those transexual Thai prostitutes."