parasites can also make tiny cysts which live on the corneas of your eyes...eventually they hatch and go round the body ending up in organs such as the kidneys or liver. These symptoms are: occasional sensitivity to light, dry eyes, bloating...holding a lot of fluid, kidney problems as in lack of urine, constipation, pain in the lower back and kidney area, and no matter what you do or do not eat a type of steady fluid weight gain. Tiredness and lack of enthusiasm.