I just learned this one this morning while reading Puzzling out SIADH in the November/December 2013 issue of Nursing Made Incredibly Easy!

To remember the early signs of syndrome of inappropriate antidiuretic hormone (SIADH), think FLAT:

Fatigue

Lethargy

Anorexia

Thirst

Here are more nursing tips, and some other mnemonics and "memory joggers" that you might find useful.

 

Reference:
Pullen, R. (2013). Puzzling out SIADHNursing Made Incredibly Easy!, 11(6)