words and no further sound can be emitted. The spasm ceases as soon as the
endeavour to phonate is abandoned.
Mogiphonia is a similar condition seen in singers, teachers and clergymen.
While the ordinary conversation voice is unaffected, professional speaking or
singing is painful and impossible.
Phonasthenia is an allied condition where the voice becomes easily fatigued
on speaking with no evidence of vocal strain.
The treatment of all these conditions is by speech therapy and relaxa-
tion exercises supervised by the therapist.