Kardashian 911 Call My Baby Has Hives, Threw Up

11/30/2010 4:05 PM PST

Kourtney Kardashian 911 Call -- My Son Mason Kardashian Has Hives, Threw Up

TMZ has obtained the 911 call from last week in which Kourtney Kardashian sounded the alarm that her 11-month-old son Mason was having an allergic reaction to peanut butter.

In the November 21 call, Kourtney is calm as a cucumber as she tells the dispatcher Mason has "hives on his face and he threw up."

An ambulance took Mason to a local hospital -- where he made a full recovery.