Table 1. Anti-psychotics used for Delusions of Parasitosis

Medication

Brand Name

Dose

Side Effects

Comment/Pearls

Pimozide

Orap

1-10mg/day

Prolongation of QT interval

Start at 1-2 mg/day and titrate up.
Check EKG pre and post-treatment

Olanzapine

Zyprexa

5-10mg/day

Akathisia (can’t sit still),
somnolence, hypotension.

Weight gain is common

Risk of tardive dyskinesia is lower
than older anti-psychotics

Risperidone

Risperdal

2-4mg/day

Akathisia, insomnia,
hypotension.

May cause weight gain

Risk of tardive dyskinesia is lower
than older anti-psychotics