1 The most common symptom of pinworms is an itchy rectal area. Symptoms are worse at night when the female worms are most active and crawl out of the anus to deposit their eggs.  Although pinworm infections can be annoying, they rarely cause serious health problems and are usually not dangerous.
To determine the suitability of an individual for a particular job, some employers may require a pre-employment physical examination. Urine drug tests, hair drug or alcohol testing, saliva drug screen, and sweat drug screen are among a few of the types of drug tests available.
Detecting Deception. The purpose of the employment polygraph test is, of course, simply to determine whether or not a candidate is being truthful on his or her job application. Any indication of deception may be cause for disqualification from consideration for employment.