PT  - JOURNAL ARTICLE
AU  - Nicholas Black
AU  - Hazim Hamada
TI  - Possible anti-VGKC autoimmune limbic encephalitis associated with SIADH
AID  - 10.1136/bcr-2017-223484
DP  - 2018 Mar 06
TA  - BMJ Case Reports
PG  - bcr-2017-223484
VI  - 2018
4099  - http://casereports.bmj.com/content/2018/bcr-2017-223484.short
4100  - http://casereports.bmj.com/content/2018/bcr-2017-223484.full
AB  - An 80-year-old woman presented with a 5-week history of increasing confusion. Examination was remarkable only for deficits in short-term memory and paranoid thoughts. Blood tests revealed hyponatraemia, and further biochemical testing was consistent with syndrome of inappropriate antidiuretic hormone (SIADH). After an exhaustive diagnostic workup for causes of SIADH, the only abnormal finding was a mildly raised antivoltage-gated potassium channel (VGKC) titre of 185 pmol/L (0–69) consistent with possible anti-VGKC autoimmune limbic encephalitis. However, other diagnostic features were absent. She is currently undergoing outpatient investigation for other causes of memory loss.