Stomach ache, headache, dizziness, and nausea are all symptoms you might hear from your child on a school day morning. The condition may even get worse as it gets closer to time for school, then miraculously become better on the weekends. It may be school phobia. Pediatrician Cindy Gellner, MD, explains what can cause school-phobic kids to feel sick and the simple method to calm the fear in your child.