Could blue lips and nail beds be an allergic reaction to peanuts?

If severe. Blue lips and nail beds suggests cyanosis, which could be signs of a severe allergic reaction. If this were the case, one would be severely ill with difficulty breathing and require immediate medical attention. If these were the only symptoms, further evaluation would be necessary to assess for another explanation.

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Is it possible that blue lips and nail beds be a symptom of peanut allergy?

Blue lips/nails. Blue lips and nail beds are a sign of not having enough oxygen in the blood and if the allergy is so bad that the person cannot breath well then you can see this, but before that the perosn will have other symptoms. See ur doc asap if you have blue lips and nail beds on an ongoing basis. If breathign difficulty call 9-1-1. Read more...