More than 120 protesters have been injured in clashes with police in Bahrain this week and a top opposition figure said the government had broached the possibility of talks to resolve the Gulf state's year-long crisis.
Activists using the name "Feb 14 Youth Coalition" have called for more demonstrations a day after protests to mark the first anniversary of a violently suppressed pro-democracy uprising with Sunni-Shia sectarian overtones.
There were clashes in Musalla near Manama and the flashpoint town of Sitra.
Police were arresting people in house to house raids in Sanabis, a Shia village on the edge of the capital, and Budaiya, a district outside Manama.
A medic who works with researchers of an international organisation and asked not to be identified has said that "on Monday we had 20 people injured in villages around the country."
The medic added that "there were over 100 cases yesterday and 37 of them are bad, with head injuries and fractures."
Most of the wounded are being treated in village homes or private health clinics because protesters from the Shia majority fear they will be arrested if they go to hospitals run by the government, which is appointed by the Sunni monarchy.
The protests began as a spontaneous movement embracing both Shias and Sunnis, cutting across religious and class divides with demands for broad political, social and economic reform.
But they descended into sectarian violence as backroom talks on democratic reforms went nowhere, and hardliners in government and opposition seized the initiative.
Government forces backed by Saudi troops crushed last year's month-long revolt.
Thirty-five people, including security personnel, had been killed by the time a state of emergency had been declared in June.
