Tingling blue is a condition caused by eating the fruit of the Spotted redberry, native of the Ventsea island. It causes the eater an intense craving for blue food, specially for the Roundleaf blueberry, and tingling sensations and sneezing whenever one tries to avoid blue food.
It is caused by eating the fruit of the Spotted redberry. It is one of the methods of the plant to win territory as both it and the Roundleaf blueberry share territory. The more Redberry is eaten, the greater the craving becomes.