Trying to find the link to the symptoms: pain linked to joint pain, back and neck, headaches, irritable bowel syndrome, reflux, food intolerance, blurred vision, depression, anxiety and dry mouth ?
A simple test for food allergies and skin tests are not enough. Should be tested for food intolerance : gluten / wheat / casein / egg and other proteins susceptible to allergies. These intolerances can be very common.