hemorrhagic manifestations, oropharyngeal lesions (inflammation of the
mouth and throat), vomiting, diarrhea, and fever.

Epilation was one of the most spectacular and obvious findings. The
appearance of the epilated patient was typical. The crown was involved
more than the sides, and in many instances the resemblance to a monk's
tonsure was striking. In extreme cases the hair was totally lost. In some
cases, re-growth of hair had begun by the time patients were seen 50 days
after the bombing. Curiously, epilation of hair other than that of the
scalp was extremely unusual.

Petechiae and other hemorrhagic manifestations were striking findings.
Bleeding began usually from the gums and in the more seriously affected was
soon evident from every possible source. Petechiae appeared on the limbs
and on pressure points. Large ecchymoses (hemorrhages under the skin)
developed about needle punctures, and wounds partially healed broke down
and bled freely. Retinal hemorrhages occurred in many of the patients.
The bleeding time and the coagulation time were prolonged. The platelets
(coagulation of the blood) were characteristically reduced in numbers.

Nausea and vomiting appearing within a few hours after the explosion was
reported frequently by the Japanese. This usually had subsided by the
following morning, although occasionally it continued for two or three
days. Vomiting was not infrequently reported and observed during the
course of the later symptoms, although at these times it generally appeared
to be related to other manifestation of systemic reactions associated with
infection.

Diarrhea of varying degrees of severity was reported and observed. In the
more severe cases, it was frequently bloody. For reasons which are not yet