title: An unusual cause of headache.
authors: Department of Surgery, Birch Hill Hospital, Rochdale Healthcare NHS Trust.
authors: C
authors: C
authors: Kyriakides
authors: S
authors: S
authors: Sivarajan
authors: K
authors: K
authors: Narain
mesh_terms: D000328:Adult; D005260:Female; D006261:Headache / Q000209:etiology*; D006801:Humans; D009777:Occipital Bone; D011183:Postoperative Complications / Q000517:prevention & control; D003668:Pressure Ulcer / Q000150:complications* / Q000517:prevention & control