To use the word "discourse" in a Foucaultian sense, the body's discourse with doors shapes what is expected of the body. It must be within a certain range of heights, and able to push a certain amount of weight. The handicapped door is a creation intended to help those who are differently-abled. Which it successful at being. Handicapped doors are important for allowing people of different physical abilities to use public spaces. But, it is also tool for categorization. To use the handicapped door is to submit to being "other." An accepted abnormal within society. The existence of the handicapped door is essentially a statement that there are those whose existence is accepted, but still considered abnormal. To use the handicapped door is in a sense a public confession to being abnormal.
The idea of going to the pharmacy as confession is an intriguing one, especially since now there are mail order prescription services, which minimizes the number of people who are confessed to.