Headaches

• Headaches are a common symptom of allergies to chocolate. Processed chocolate contains milk and sometimes nuts, which can trigger these symptoms.
  
  

Skin Reactions

• Hives, skin rashes and rectal itching can occur. These are treatable with topical creams.
  
  

Asthma and Cold Symptoms

• Wheezing and shortness of breath can occur if you are allergic to chocolate. These can be treated using an inhaler prescribed by your doctor, or antihistamines for a runny nose and sneezing.
  
  

Considerations

• Because the cocoa in the chocolate may also contains caffeine, dyes, gluten, corn syrup, soy lecithin, or other chemicals, these may potentially be the cause allergic reactions.
  
  

Diagnosis

• An allergy test can help determine an intolerance for chocolate, or intolerance to the ingredients in the chocolate. This will entail injecting food extracts into your skin and studying the reaction.