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Mason Disick, the 11 month-old-son of E! reality star Kourtney Kardashian, is doing fine after he was hospitalized for a peanut allergy that caused him to vomit and develop hives, his mom said Monday.

Los Angeles medics rushed to the home Kardashian shares with her boyfriend, Mason's 27-year-old father Scott Disick, late Friday evening after their son developed an allergic reaction to peanut butter.

The paramedics strapped the young child, who was conscious, onto a gurney and transported him to a local hospital for evaluation.

"He was in good spirits the whole time and didn’t even know anything was wrong. He even enjoyed riding in the ambulance. He’s such a good boy!!" Kardashian, 31, wrote on her blog Monday about the incident, adding "he is doing fine."

In addition to her appearance on the reality shows "Keeping Up with the Kardashians," "Kourtney & Khloe Take Miami" and the upcoming "Kourtney and Kim Take New York" -- the eldest of the Kardashian tribe will make her acting debut on the ABC soap opera "One Life to Live" in March 2011.

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