Symptoms of a peanut allergy usually develop within a hour of eating peanuts.

Symptoms of a mild allergic reaction to peanuts include:

• Hives:
• Rash in children
• Rash in adults
• Eye redness
• Itching
• Nasal congestion
• Runny nose

Symptoms of a severe allergic reaction to peanuts include:

• Chest pain
• Difficulty breathing
• Facial swelling
• Fainting
• Low blood pressure
• Mouth or tongue swelling
• Rapid pulse
• Severe hives
• Severe wheezing
• Vomiting