11.   Frustration in getting insurance payment for treatment only worsens the situation, especially when seeking treatment in the first place requires overcoming the stigma of mental disorders.

12.   In men with advanced prostate cancer, the treatment sometimes requires removal of the whole prostate, Crum said.

13.   Other impotency treatments require other techniques such as surgical implants.

14.   Proper treatment of sinusitis requires an antibiotic because at least half the infections are bacterial and not self-curing.

15.   The month-long treatment requires patients to sit in a hyperbaric chamber wearing helmets flooded with pure oxygen in an attempt to destroy the bacteria.

16.   The other treatments require anesthesia and some period of recuperation, according to doctors.

17.   The treatment requires use of a series of contact lenses purportedly to reshape the cornea gradually to correct nearsightedness, farsightedness and astigmatism, the FTC said.

18.   To be effective, the treatment requires patients to stick with maintenance measures for a lifetime.

19.   Treatment requires prescription medication.

20.   Until now, repeatedly administering drugs directly into a clot has been a problem, Hobbs said, because the treatment requires extensive time and resources.