Well, it depends on what the Abilify is prescribed for. Assuming there are minimal side effects, it can be taken indefinitely.
Do you know what it is prescribed to treat? You mentioned some of the patient's difficulties above and from that I would guess that it has to do with mood stabilization, but can't be sure....
Well, anti-psychotic medications can have Extrapyrmidal Symptoms (EPS) which consist of something called tardive dyskinesia (td). People with tardive dyskinesia generally develop facial tics like lip smacking or grimacing. However, Abilify doesn't usually have those effects. Agitation or restlessness are more common. Regardless, if he is having trouble with involuntary movements, he needs to see the doctor and talk about a change of medication.
I hope this helps.