It is fundamental looking for the well-known red flags suggesting for a secondary origin of an acute headache during pregnancy. For a differential diagnosis, one or more additional studies can be necessary: brain MRI and MR angiography with contrast, brain CT, ophthalmoscopy, electroencephalography...
Red and orange flags for secondary headaches in clinical practice. Neurology. 2019;92:134–44. PubMed PubMed Central Google Scholar Morris Z, Whiteley WN, Longstreth WT, Weber F, Lee YC, Tsushima Y, et al. Incidental findings on brain magnetic resonance imaging: systematic review and meta...