More than 55 diseases have been linked to gluten, the protein found in wheat, rye, and barley.The most common symptom of a gluten allergy is stomach bloating after eating a meal that contains gluten. Other symptoms may include skin that resembles chicken skin on the arms, fatigue after meals, dizziness, migraine headaches, swelling or pain in joints, anxiety, depression and mood swings. Many people have overcome their gluten allergy by following a gluten free diet.