Spontaneous Intracranial Hypotension in Pregnancy with Aggravated Comorbidity: A Case Report and Review of Diagnostic and Management Challenges

<b>Background and Clinical Significance:</b> Spontaneous intracranial hypotension (SIH) is a rare cause of headache characterised by cerebrospinal fluid (CSF) leakage, with an estimated incidence of 3.7 to 5 cases per 100,000 per year, peaking around the age of 40 years. Its diagnosis and management are particularly challenging in pregnancy due to overlapping symptoms and limited diagnostic options. <b>Case Presentation:</b> We report the case of a 42-year-old pregnant woman at 14 weeks of gestation presenting with a history of orthostatic headache and facial sinus tenderness, later diagnosed as spontaneous intracranial hypotension. <b>Conclusions:</b> Headache is a common clinical symptom that may be associated with a wide spectrum of underlying conditions, ranging from benign causes such as migraine or tension-type headache to potentially life-threatening pathologies, including subarachnoid haemorrhage. This case illustrates the diagnostic complexity of SIH in pregnancy and the importance of a multidisciplinary approach and vigilance for neurological symptoms during pregnancy.