My son is 10 years old. We went skiing today, and he is quite tired, but also not feeling well. He tells me he is seeing 1000 s of dots, almost like things are pixelated. He is slightly nauseous. He does not have a headache but his eyes hurt a bit. He has had migraines in the past, but the headaches (which is not present this time) are always the central feature. Any help will be appreciated.