Often, the diagnosis is a relief! It helps to understand that this is not simply about trying harder and that it’s not about being “not smart.”
With the diagnosis comes strategies. Meds may be an option but your kid might be able to come up with ways to deal with this without them. (Mine did. His choice.) While it’s not a perfect analogy, it’s like telling someone they have diabetes. With that understanding, they can modify their diet. Some may need insulin but some may not. But they won’t be having doughnuts for breakfast!