In the negative Cherry Plum state, people feel ready to explode because they keep so many feelings pent up inside. They keep themselves under tight control, not letting on to the outside world the turmoil that resides within. This state can lead to violence when "the dam finally breaks."
In adults, it often leads to depression and an inability to work efficiently. In children, it can lead to bed wetting, because sleep is the only time they're able to release their anxieties. Unfortunately, that release of inner anxieties often results in a wet bed. The problem is compounded because a bed-wetting child will often deny himself or herself many of the joys of childhood – such as camping trips and sleep-overs with friends.