Nocturnal Emissions can be excruciating. However, I believe it may be avoided if you clear your bladder by urinating prior to going to sleep. In addition, it may or may not help to avoid drinking fluids during bedtime. This is because when your bladder feels full, it may be more pressure to having a nocturnal emission. Also, try to eliminate any stress in your life, because that might also be a contributing factor.
As for Pois, I have had it practically since after puberty. However, I noticed that after I lost a significant amount of weight and strength, my symptoms have gotten worse.