A Hezbollah military official was wounded while fighting with Syrian forces on Friday, the Now Lebanon news site reported.
According to the report, the official was wounded in Al-Quosays and was taken to Beqaa hospital for treatment.
Syria's death toll has climbed to over 40,000, a violence monitoring group said Friday.
Rami Abdelrahman, head of the Syrian Observatory for Human Rights, said about half the fatalities were civilians and the other half split about evenly between rebels and government soldiers.
Reuters contributed to this report