Which of the following is not true about spasmodic dysphonia

SPASMODIC DYSPHONIA Spasmodic dysphonia is also called as laryngeal dysphonia. The condition is characterised by spasm of phonatory muscles. It is a neurological disorder and is of following types: (A) Adductor spasm (M/C):- Adductor muscles go into spasm lead ing to strained and strangled voice (scratchy creaky voice). Management :- Botulinum toxin injection in thyroarytenoid muscle. (B) Abductor spasm:- Abductor muscles go into spasm. Vocal cords are unable to abduct leading to leakage of air during speech. The voice is breathy or whispery. Management :- Botulinum toxin injection in posterior cricoarytenoid muscle. Ref:- Dhingra; pg num:-314