When our daughter was 14 years old she developed Paruresis (or shy bladder syndrom) which is a type of phobia in which the sufferer is unable to urinate in the (real or imaginary) presence of others, such as in a public restroom. Some people have brief, isolated episodes of urinary difficulty in situations where other people are in close proximity.
Paruresis, however, goes beyond simple shyness, embarrassment, fear of exposure, or fear of being judged for not being able to urinate. Other people may find that they are unable to urinate while in moving vehicles, or are fixated on the sounds of their urination in quiet restrooms or residential settings. In severe cases, a person with paruresis can urinate only when alone at home or through the process of catheterization.
Although most sufferers report that they developed the condition in their teenage years, it can strike at any age. Also, because of the differing levels of severity from one person to another, some people's first experience of the problem is when, for the first time, they "lock up" attempting to produce a sample for a drug test. Many women are unaware that they, too, are subject to paruresis; articles about women and urination emphasize other female urinary dysfunctions, such as urinary incontinence or frequent urination.
Some people cope by deliberately holding in their urine, by refraining from drinking liquids, or locating unoccupied or single-occupancy public bathrooms.
Our entire life was scheduled around where there was a private bathroom so this effected us going out to dinner, the movies or taking a vacation. We were working with a therapist for our daughter's OCD and mentioned it to her. She basically had me take her to public restrooms and even if she couldn't urinate, she wanted her to just sit there and get used to the sounds, etc. Loud sounds and people around were her biggest issue. This went on for a few years and slowly got better. When she was enrolling for college she was in a panic about using the restrooms on campus and we were able to work with Disabled Student Services for special accomodations.
It was a very difficult time for our daughter and our family. I used to think, Wow, she's been potty trained since she was 3 years old, what is going on??? She is 95% better, lives at home and is doing well at college. A mother's job is never over. Hang in there, be patient and do the best you can to keep the lines of communication open even though it may be very frustrating.