II am diabetic. I eat cantaloupe, blueberries, apples and have never itched after having them. Strawberries break out my face so I quit eating them. Too much Vitamin C for me. I have had watermelon the last few days and I'm itching on my upper back terribly. I've taken a benadryl to see if it will help. Is it possible I could be allergic to watermelon? Does it have that much sugar to affect me like this? I have noticed that I have been going to the bathroom a lot these past few days. Could I be losing too much fluid and getting dehydrating that could be causing the itch? Look forward to your reply. Thanks.