Can you take a medication again after a malignant syndrome

My son is in the hospital and we have a hospital psychiatrist. My son Han a toxic build up to seroquel a few years ago. All psychiatrist said he could not take it again. The doctor at the hospital gave it to him. I spoke with psychiatrist out of hospital and she hit the roof.She is calling this doctor He is on 18 mg of invega

I don`t understand-why is your son in the hospital? Was it from the meds?

According to the medical literature, if a person has Neuroleptic Malignant Syndrome, they should not be rechallenged with that same medication.