Anaphylactic reaction to phuk-waan-ban in a patient with latex allergy.

Phuk-waan-ban, Euphorbiaceae Sauropus androgynus (Linn) Merr, belongs to the family Euphorbiaceae, which is the same as the rubber tree, Euphorbiaceae Hevea brasiliensis. The young leaves are edible. To the best of the authors knowledge, this is the first report of anaphylactic reaction to Phuk-waan-ban in latex allergic patients.