fixations
I am not sure yet, but my own diagnosis of my husband is a form of adhd.
One symptom is watering. He waters plants, trees, and the grass with the hose for hours. HE thinks he is doing something important. When I come home and ask what he has done say for the last 3 hours, I can see all the puddles and wet sidewalks. He waters sometimes daily, sometimes only 3 times a week. But even when it has rained the day before, he waters.