52%. Source: The Rochester, WA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.
A pilonidal cyst is a fluid-filled sac that occurs in the area at the top of the crease of the buttocks overlying the tailbone (sacrum). This cyst and the overlying skin in the area can become infected, forming a painful abscess. Pilonidal cysts are fluid-filled sacs that form at the top of the crease of the buttocks above the sacrum. 2  A painful abscess can form if the cyst and the overlying skin become infected.
Font Size. A. A. A. A pilonidal cyst occurs at the bottom of the tailbone (coccyx) and can become infected and filled with pus. Once infected, the technical term is pilonidal abscess. Pilonidal abscesses look like a large pimple at the bottom of the tailbone, just above the crack of the buttocks.ilonidal Cyst Symptoms. The symptoms of a pilonidal cyst include: 1  Pain at the bottom of the spine. 2  Swelling at the bottom of the spine. 3  Redness at the bottom of the spine. 4  Draining pus. 5  Fever.