You searched for: “gymnophobia
gymnophobia (s) (noun) (no plural)
1. A pathological fear of being seen without wearing any garments: Sometimes gymnophobia can be noticed among children going through puberty because they don’t want to be seen naked and so they avoid changing rooms, showers, and beaches.
2. A morbid dread of seeing a person without any attire on or of any normally uncovered parts of the body: There are some people who have gymnophobia and so they never take a shower with others because they don't want to see others in the nude.