Trauma is not a common origin of pilonidal sinus.
Doll
Dietrich
D
Petersen
Sven
S
D003937:Diagnosis, Differential; D006801:Humans; D010864:Pilonidal Sinus / Q000175:diagnosis / Q000209:etiology*; D011187:Posture; D012871:Skin Diseases / Q000175:diagnosis / Q000209:etiology*; D014947:Wounds and Injuries / Q000150:complications*