4. Contact dermatitis
Besides food allergies, another common manifestation of the immune system is contact dermatitis. Instead of food allergies, it is an inflammatory rash caused by direct skin contact with agents that trigger either inflammation or allergies and inflammation. This type of dermatitis causes extensively reddened and itchy areas where the contact took place. Common places of contact dermatitis include the skin of the hands, upper and lower extremities. It can be in the abdominal or thoracic region in cases of allergies to the fabric of your clothes.
