The real question is the triggers for the meltdowns. Specifically, if there's a big sensory component here, that's the place to start, well before the psychoth

The real question is the triggers for the meltdowns. Specifically, if there's a big sensory component here, that's the place to start, well before the psychotherapy, SSRIs or talk. If what's getting you to explode is some kind of sensory overload, no amount of talk will solve that. We each have an optimal bandwidth of sensory stimulus in which we function. For some, it's pretty broad. For others, it's very narrow and complex. But the large majority, those who come across as perfectly normal and well-functioning, never even pause to think about this - and most people's bandwidth isn't that broad. So the first thing I'd do is read about your sensory system and think hard about what throws you off in terms of sensory input. There are sure to be questionnaires online on this. It may be that what will help you far more than drugs or sitting still is installing a swing in your backyard.