Dyma'r cyd-destun

"Allergic-type events can occur with any protein-containing product
that is injected into a vein. Symptoms of an allergic-type event may
include hives, tightness of the chest, wheezing, low blood pressure
and anaphylaxis (very severe allergic-type events)."

Mae'n debyg bod 'Allergic-type' yn rhan o jargon y maes arbennig hwn,
ac yn benodol i'r symptomau a geir fel arfer oherwydd alergedd, ac mae
llawer o enghreifftiau ohono ar google.

Diolch ymlaen llaw
Muiris