PT  - JOURNAL ARTICLE
AU  - Gregor Mayer
AU  - Petra Müller
AU  - Barbara Pischinger
AU  - Eva Seiringer
AU  - Martin Windpessl
TI  - Acute water intoxication in an adult man: ‘dental hyponatraemia’ revisited
AID  - 10.7861/clinmed.2022-0141
DP  - 2022 Jul 01
TA  - Clinical Medicine
PG  - 364--365
VI  - 22
IP  - 4
4099  - http://www.rcpjournals.org/content/22/4/364.short
4100  - http://www.rcpjournals.org/content/22/4/364.full
SO  - Clin Med2022 Jul 01; 22
AB  - The differential diagnosis of hyponatraemia is notoriously wide. However, only a minority is acute, ie develops in less than 48 hours. We describe an unusual cause of water intoxication due to toothache. A 30-year-old man with no medical history of note presented in an acute confusional state. Laboratory results disclosed profound hyponatraemia. Urinary indices were consistent with overdrinking, but in the absence of a reliable history, other aetiologies had to be excluded. This case highlights the benefit of a structured approach in the assessment of electrolyte disturbances.