A pilonidal cyst, sometimes called pilonidal disease, is a fluid-filled sac that usually occurs on the tailbone at the top of the buttocks. It usually starts as an infection of a hair follicle in the ...

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Removable cover: yes, machine-washable Sutera’s medium-firm seat cushion is designed with a cutout to take pressure off your tailbone, and its shape mimics the contours in your legs to help ...