Webster's New World Medical Dictionary

dysmenorrhea
See 
menstrual cramps.
dysmorphic feature
A body characteristic that is
abnormally formed. A malformed ear, for example,
is a dysmorphic feature.
dysmorphology
The study of human congenital
malformations (birth defects), particularly those
affecting the anatomy (morphology) of the individual.
dysostosis, cleidocranial
See 
cleidocranial
dysostosis.
dyspareunia
Pain during sexual intercourse.
There are many causes of dyspareunia, including
vaginal infection or dryness. Treatment is directed
toward the underlying cause and vaginal lubricant
jelly can be of help.
dyspepsia
Indigestion. A condition characterized
by upper abdominal symptoms that may include
pain or discomfort, bloating, feeling of fullness with
very little intake of food , feeling of unusual fullness
following meals, nausea, loss of appetite, heartburn,
regurgitation of food or acid, and belching. The
term dyspepsia is often used for these symptoms
when they are not typical of a well-described disease
(for example, gastrointestinal reflux) and the cause
is not clear. After a cause for the symptoms has been
determined, the term dyspepsia is usually dropped
in favor of a more specific diagnosis.
dysphagia
Difficulty swallowing. Dysphagia is
due to abnormal nerve or muscle control. It is com-
mon, for example, after a stroke. Dysphagia can
compromise nutrition and hydration and may lead
to aspiration pneumonia and dehydration.
dysphonia
An impairment of the voice. Difficulty
in speaking. Hoarseness caused by a virus is a com-
mon form of dysphonia.
dysphonia, spasmodic
A disorder that involves
the muscles of the throat that control speech.
Spasmodic dysphonia causes strained and difficult
speaking or breathy and effortful speech. Also
known as spastic dysphonia and laryngeal dystonia.