PT  - JOURNAL ARTICLE
AU  - Michael S Lundin
AU  - Beenu Kaw
AU  - Rajit Pahwa
TI  - Syndrome of inappropriate antidiuretic hormone associated with eosinophilic granulomatosis and polyangiitis
AID  - 10.1136/bcr-2019-231249
DP  - 2020 Mar 01
TA  - BMJ Case Reports
PG  - e231249
VI  - 13
IP  - 3
4099  - http://casereports.bmj.com/content/13/3/e231249.short
4100  - http://casereports.bmj.com/content/13/3/e231249.full
SO  - BMJ Case Reports2020 Mar 01; 13
AB  - A 62-year-old man presented with classic signs and symptoms of eosinophilic granulomatosis and polyangiitis (EGPA, also known as Churg-Strauss syndrome)—mononeuritis multiplex, palpable purpura, hypereosinophilia, positive P-ANCA (perinuclear anti-neutrophil cytoplasmic antibodies) developed diffuse alveolar haemorrhage. The patient had longstanding mild hyponatraemia, but developed moderate and symptomatic hyponatraemia characteristic of the syndrome of inappropriate antidiuretic hormone. The patient’s serum sodium returned to his baseline- mildly hyponatraemic, after initiation of treatment targeted towards EGPA.