Sinus infections usually begin with the symptoms of a cold (for example, a runny nose, occasional cough and/or mild fever), and then develop into pain and pressure in the sinus cavities. About 7 to 10 days after initial cold-like symptoms other symptoms develop that suggest you may have a sinus infection.
The Ruins of Sescheron. The Ruins of Sescheron are available in the Adventure Mode of Diablo III. Specifically in Act III, near the Arreat Crater. They were released as part of patch 2.3. The area is designed to have a melancholy feel to it, with elements such as funerary art and pyres.
Temple of Ahn'Qiraj bosses. Temple of Ahn'Qiraj is a 40-man raid dungeon located in southern Silithus. It was released with patch 1.9 during a massive server-dependent event called the Gates of Ahn'Qiraj. Players access this instance via the Gates of Ahn'Qiraj, an area before the instances with portals to both Ruins of Ahn'Qiraj and Temple of Ahn'Qiraj. The entrance to Ruins of Ahn'Qiraj, which is a 20-man raid instance intended to be the step before Blackwing Lair, is via a separate portal following the left path from the Scarab Wall gate.