A clinico-statistical analysis was performed on 35 cases of mutational disturbance at Dept of Otolaryngology of Ewha Womans University Hospital during past 5 years and the following results were obtained.
1) Among 35 cases ibf mutational disturbance, continuation of mutational disturbance were 11 cases, 9 cases were male(25.7%) and 2 cases were female(5.7%).
2)´Among 15 rases of phonasthenia, 5 cases were male(143%) and 10 cases were female(28.6%).
3) Among 9 cases of vocal cord atrophy, 6 cases were male(17.1 %) and 3 cases were female(8.6 % ).
4) The age distribution of mutational disturbance in order of frequency were obtained as follows.
Among 11 cases of continuation of mutational disturbance, 2125year old group were 5 cases(45.5 %
1520 and 3135year old group were 2 cases(18.2%) each.
Among 15 cases of phonasthenia, 26-30year old group were 6 cases(40.0%), 3135year old group were 3 cases(20.0%).
Among 9 cases of vocal cord atrophy, 2630year old group and 3135year old group were 2 cases(33. 3 % ) each.
5) Duration of visit after voice disturbance in order of frequency were 12year group 10 cases(28.6 %), 35year group 9 cases(25.7%) and 6month-1year group 4 cases(11.4%).
6} Other symptoms except voice disorder in order of frequency were dry sensation of pharyngolarynx, foreign body sensation of pharyngolarynx, neurasthenia, general fatigue, pain of neck and shoulder area.
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