According to the United Nations high commissioner for refugees, about 1.2 million Iraqi refugees now live in Syria; the Syrian government puts the figure even higher.

Given the deteriorating economic situation of those refugees, a United Nations report found last year, many girls and women in “severe need” turn to prostitution, in secret or even with the knowledge or involvement of family members. In many cases, the report added, “the head of the family brings clients to the house.”

Aid workers say thousands of Iraqi women work as prostitutes in Syria, and point out that as violence in Iraq has increased, the refugee population has come to include more female-headed households and unaccompanied women.

“So many of the Iraqi women arriving now are living on their own with their children because the men in their families were killed or kidnapped,” said Sister Marie-Claude Naddaf, a Syrian nun at the Good Shepherd convent in Damascus, which helps Iraqi refugees.

She said the convent had surveyed Iraqi refugees living in Masaken Barzeh, on the outskirts of Damascus, and found 119 female-headed households in one small neighborhood. Some of the women, seeking work outside the home for the first time and living in a country with high unemployment, find that their only marketable asset is their bodies.

“I met three sisters-in-law recently who were living together and all prostituting themselves,” Sister Marie-Claude said. “They would go out on alternate nights — each woman took her turn — and then divide the money to feed all the children.”

For more than three years after the American-led invasion of Iraq in 2003, Iraqi prostitution in Syria, like any prostitution, was a forbidden topic for Syria’s government. Like drug abuse, the sex trade tends to be referred to in the local news media as acts against public decency. But Dietrun Günther, an official at the United Nations refugee agency’s Damascus office, said the government was finally breaking its silence.