Benign insulinoma--a diagnostic challenge: a case report.

A 22-year-old man who had served national service uneventfully three years ago lost consciousness one morning during reservist training during the fasting month. As it was the fasting month for muslims, he was not given any breakfast that morning. He was brought to the medical centre, where after taking blood for glucose estimation, glucose was given, resulting in recovery of consciousness. He was then referred to hospital. On admission, he revealed that about a year previously, he was, during similar military training, unarousable in the morning after overnigh t training. He regained consciousness, after an injection at the medical centre. Since that day he had at least six similar episodes.