PT  - JOURNAL ARTICLE
AU  - Abasszade, Joshua Haron
AU  - Rama Raj, Palaniraj
AU  - Tinson, Alistair John
TI  - Anaphylaxis following enteral exposure to <em>Chlorella vulgaris</em>
AID  - 10.1136/bcr-2020-237054
DP  - 2020 Nov 01
TA  - BMJ Case Reports
PG  - e237054
VI  - 13
IP  - 11
4099  - http://casereports.bmj.com/content/13/11/e237054.short
4100  - http://casereports.bmj.com/content/13/11/e237054.full
SO  - BMJ Case Reports2020 Nov 01; 13
AB  - We present a case of a 75-year-old man who was admitted to an Australian tertiary emergency department with severe hypotension, wheeze, widespread urticarial rash and diarrhoea. On arrival to the emergency department following initial resuscitation by ambulance staff, he was admitted to the intensive care unit with a presumptive diagnosis of gastroenteritis. This diagnosis was later revised following the availability of tryptase levels and clarification of his presenting circumstances, which established a clear temporal relationship between his anaphylactoid symptoms and the oral ingestion of Chlorella vulgaris supplements. While there are a few case studies describing allergic/anaphylactic reactions to several other species of Chlorella, this appears to be the first reported case of anaphylaxis to C. vulgaris.