<unk>  can develop in individuals at any age. It is more likely to develop in individuals who work in voice performance which can range from singers, actors, teachers or radio and television broadcasters. Women are more likely than men to develop BBS due to the tendency of lowering their voices in a professional environment. This syndrome is also more prevalent in the 40–50-year-old-age group as their vocal cords thin. Vocal disorders are prevalent in roughly 10% of the population and can range from muscle tension dysphonia to speech and language disorders.
Bogart–Bacall syndrome
Michels Caskey syndrome
Papillon–Lefèvre syndrome
Jeavons syndrome
Bonnet–Dechaume–Blanc syndrome
Rudiger syndrome
McGillivray syndrome
Teunissen–Cremers syndrome