A 76-year-old male visited his GP with headache and blurred vision since last 2 days. He was also suffering with muscle ache and lethargy for the past 3-4 days.

While brushing his hair, he was experiencing pain on the same side of the forehead as headache. History Recently prescribed statin for raised cholesterol Bendroflumethiazide 2.5mg for hypertension – once daily Examination Blood pressure- 136/86 mmHg Pulse- 78/min   Investigation                                                                            Test value                                         Normal value Haemoglobin                                                   13.2 g/dL                                          11.5-16.0g/dL Mean cell volume                                            86 fL                                                  76-96 fL White cell count                                               9 x…