I picked up dengue while living in SE Asia.
Picture yourself curled into a ball with a screaming hot fever, measles-like rash, and a sledgehammer of a headache. The thin sheets of your cheap Thai hotel soaked with sweat, but your body won't stop trembling as you just can't seem to get warm. That's the easy part.
Now imagine a team of rugby players took ball peen-hammers and smashed every joint in your body. Repeatedly. There's a reason it's known as "break bone" disease.
Enjoy your trip.