The accompanying illustration shows a
case in which there was osseous depression of the cranium and a
localized alopecia. The disease is very rare, only about 100
cases having been reported. Of five cases seen by Dana, three
were in females and two in males; in all the cases that could be
found the origin was between the tenth and twentieth years. It is
a chronic affection, usually beginning in early life, increasing
slowly for years, and then becoming stationary. It is
distinguished from one-sided muscular atrophy by the electric
reaction, which is not lost in the facial muscles in facial
hemiatrophy, and there is no atrophy of other muscles of the
body.
Burr contributes an exhaustive paper on hemiatrophy of the tongue
with report of a case as follows: "L. B., female, mulatto,
thirty-one years old, married, came to the Medico-Chirurgical
Hospital, Philadelphia, September 23, 1895, complaining that her
'tongue was crooked.' Save that she had had syphilis, her
personal history is negative. In February, 1895, she began to
suffer from headache, usually behind the left ear, and often
preventing sleep. At times there is quite severe vertigo. Several
weeks after the onset, headache persisting, she awoke in the
night and found the left side of the tongue swollen, black, and
painless.
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