nyctophonia

nyctophonia

 [nik″to-fo´ne-ah]
loss of voice during the day but not at night.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

nyctaphonia

, nyctophonia (nĭk″tă-fō′nē-ă) (nĭk″tō-fō′nē-ă) [″ + a, not, + phone, voice]
Loss of voice during the night.
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