I would strong recommend you dont skip does for your antipsychotic to take mdma. Your taking a drug which i believe is a antagonist (basically blocks) seritonin 5-ht2a, dopamine d2, and alpha Adrenic receptors.
I think mdma and its metabolite act at the monoamine transports net sert and dat, taar and vmat receptors, 5ht1 and 5ht2 receptors, and alpha adrenic receptors. Essentially all in direct opposite of a drug your taking medically.
Is it really worth a few hours of euphoria to risk a psychotic episode, manic episode, or whatever.
Think about it your taking a drug because naturally your brain may be a bit out of balance. No big deal i take lithium for example because naturally i tend to be very unstable and suicidal. When i take it i feel fine. But if i stopped it to go and party well i might jump off a bridge. Especially, if i took something that did the exact opposite of lithium.
Im not trying to bash mdma or say its a bad drug. Just for some people might be a bad idea due to medical reasons.