There's one other point which may be worth mentioning, briefly, here.
If you are a person who has been taking medications like Risperdal for some time, and have developed tardive dyskinesia
, this condition can actually be masked by the medication itself. This condition can potentially also be masked by risperdal. So, for example, if you stop taking the other med, but imediately start the risperdal, you might not know you have the condition, but then when you stop taking the Risperdal (particularly if you are no longer taking any of the other meds in the same class) the symptoms may emerge, leading one to think that they are the result of having been on (or just stopped) the risperdal.