Stress
Your primadonna patients can be very demanding. Expect to get yanked out of bed at 2:00AM to give a hard-working star an on-the-set B-12 or Botox shot; or one of the guys in New Direction could give himself a hangnail running from that girl mob that chased him down a fire escape.
Anything is possible and you will have to be on call, day or night, rain or shine. If you make a mistake by giving a star patient something that causes an allergic reaction, taking her from beauty queen to Oompa Loompa right before she has to go on stage—well, let's just say this crowd doesn't have a shortage of lawyers at their disposal. No pressure.