PT - JOURNAL ARTICLE AU - Boby Varkey Maramattom TI - Cough headache as a presenting feature of posterior reversible encephalopathy syndrome (PRES) AID - 10.7861/clinmed.2020-1080 DP - 2021 Mar 01 TA - Clinical Medicine PG - e237--e238 VI - 21 IP - 2 4099 - http://www.rcpjournals.org/content/21/2/e237.short 4100 - http://www.rcpjournals.org/content/21/2/e237.full SO - Clin Med2021 Mar 01; 21 AB - A 23-year-old man with chronic renal failure on maintenance haemodialysis was referred to the neurology outpatient clinic with new onset cough headache. On evaluation, his blood pressure was 220/120 mmHg and outpatient fundus photography showed grade IV hypertensive retinopathy. Urgent magnetic resonance imaging showed features of posterior reversible encephalopathy syndrome (PRES). Emergent treatment of hypertension led to a rapid resolution of his cough headache. New onset cough headache may be a marker of PRES.