My diabetic son has been ill for several days. On the first day of feeling tired with high blood glucose and ketones, his school nurse noticed a red line going down his forehead from the hairline to the nose. It went away but reappeared 3 days later. He's also been itching today and has a few spots on his face that usually appear when he's having an allergic reaction to something environmental. We gave him Benadryl. Just wondering about the line.....it almost appears to be a scratch but it appeared out of nowhere. His BG is back to normal and ketones are gone but he's still feeling a little under the weather.