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.
Pilonidal disease is a chronic infection of the skin in the region of the buttock crease (Figure 1). The condition results from a reaction to hairs embedded in the skin, commonly occurring in the cleft between the buttocks. The disease is more common in men than women and frequently occurs between puberty and age 40. It is also common in obese people and those with thick, stiff body hair. Figure 1: Pilonidal disease is a chronic skin infection in the buttock crease area. Two small openings are shown (A).