headache

A 70-year-old man presents to the emergency department with sudden onset of severe headache, nausea, and vomiting. He has a history of hypertension and is currently on antihypertensive medication. On examination, he is drowsy and has a blood pressure of 180/110 mmHg. A CT scan of the brain shows a hyperdense area in the right basal ganglia. What is the most likely diagnosis?

A 72-year-old woman with a history of well-controlled hypertension presents with sudden-onset headache and vomiting. Neurological exam reveals mild neck stiffness but is otherwise normal. A CT angiogram reveals a posterior communicating artery aneurysm, which was subsequently coiled. The image shows a post-coiling angiogram. 24 hours post-procedure, she develops worsening headache and new-onset right-sided weakness. What is the MOST appropriate next step?

A 68-year-old male presents with worsening headaches and blurred vision. He underwent endovascular coiling for a posterior cerebral artery aneurysm 6 months ago. The attached image was obtained. Which of the following is the MOST appropriate next step in management?

A 25-year-old man presents to the emergency department with a 2-day history of severe headache, photophobia, and neck stiffness. He has no significant past medical history and is not on any medications. On examination, he is febrile with a temperature of 39°C, and there is a positive Brudzinski's sign. What is the most appropriate initial investigation to confirm the diagnosis?

A 48-year-old sheep farmer presents to his GP with a two-week history of persistent fever, severe retro-orbital headache, and profound fatigue. He denies cough, shortness of breath, or rash. On examination, his temperature is 38.5°C, pulse 85 bpm, BP 120/80 mmHg. The remainder of the examination, including chest auscultation, is unremarkable. He has not travelled outside the region recently.

A 55-year-old farmer presents with a week of fever, severe headache, and myalgia. He reports recent exposure to lambing ewes on his property. Physical examination is unremarkable except for mild hepatomegaly and normal vital signs. Considering the patient's occupation, exposure history, and clinical presentation, what is the most likely diagnosis?

A 62-year-old man presents to the emergency department with sudden onset of severe headache, nausea, and vomiting. He has a history of poorly controlled hypertension and is currently on no medications. On examination, he is drowsy but arousable, with a blood pressure of 210/120 mmHg and a heart rate of 90 bpm. Neurological examination reveals right-sided hemiparesis and a left gaze preference. A CT scan of the head shows a large hyperdense area in the left basal ganglia with surrounding edema. What is the most appropriate initial management for this patient?

A 65-year-old man undergoes successful coil embolization of a ruptured anterior communicating artery aneurysm. Two days post-procedure, he develops a temperature of 38.1°C, generalized malaise, and a headache unresponsive to paracetamol. Neurological exam is unchanged from baseline. CRP is 45 mg/L (normal <5). Which of the following is the most likely cause of his current symptoms?

A 55-year-old farmer presents with a week of high fever, severe retro-orbital headache, and profound muscle aches. He denies cough, sore throat, or rash. On examination, temperature is 39.5°C, pulse 90, BP 120/80. Lungs are clear to auscultation. Abdomen is soft, non-tender. Initial bloods show mildly elevated transaminases. What is the most likely diagnosis?

A 68-year-old presents with worsening headaches post-aneurysm coiling. The image shows a follow-up angiogram. What is the MOST appropriate next step?

A 40-year-old man presents to the emergency department with sudden onset of severe headache, nausea, and vomiting. He describes the headache as the worst he has ever experienced. He has a history of hypertension but is otherwise healthy. On examination, he is alert but in distress, with a blood pressure of 180/110 mmHg, heart rate of 90 bpm, and respiratory rate of 18 breaths per minute. Neurological examination reveals neck stiffness but no focal neurological deficits. A CT scan of the head shows no acute intracranial hemorrhage. What is the most appropriate next step in the management of this patient?

A 67-year-old man presents to the emergency department with sudden onset of severe headache, nausea, and vomiting. He has a history of hypertension and is currently on amlodipine. On examination, he is drowsy but arousable, with a blood pressure of 210/120 mmHg and a heart rate of 90 bpm. Neurological examination reveals a left-sided hemiparesis and a right-sided facial droop. A CT scan of the head shows a hyperdense lesion in the right basal ganglia with surrounding edema. Which of the following is the most appropriate initial management step?

A 45-year-old man presents to the emergency department with sudden onset of severe headache, nausea, and vomiting. He describes the headache as the worst he has ever experienced. He has a history of hypertension but is otherwise healthy. On examination, he is alert but in distress due to the headache. His blood pressure is 180/110 mmHg, heart rate is 90 bpm, and he has no focal neurological deficits. A CT scan of the head shows no acute intracranial hemorrhage. What is the next best step in management?

A 32-year-old woman presents to the emergency department with sudden onset of severe headache, nausea, and photophobia. She has no significant past medical history and is not on any medications. On examination, she is alert but in distress due to the headache. Her vital signs are stable, and there is no neck stiffness. A CT scan of the head is performed and shows no abnormalities. What is the most appropriate next step in the management of this patient?

A 45-year-old farmer presents with a 10-day history of fever, severe retro-orbital headache, and myalgia. He denies cough or dyspnoea. Physical examination is unremarkable. What is the most appropriate initial investigation?

A 62-year-old woman presents to the emergency department with sudden onset of severe headache, nausea, and vomiting. She describes the headache as the worst she has ever experienced. Her medical history includes hypertension and hyperlipidemia, for which she is on regular medication. On examination, she is alert but in distress, with a blood pressure of 180/100 mmHg, heart rate of 90 bpm, and respiratory rate of 18 breaths per minute. Neurological examination reveals neck stiffness but no focal neurological deficits. A CT scan of the head shows no acute intracranial hemorrhage. Which of the following is the most appropriate next step in management?

A 58-year-old man presents to his general practitioner with a 3-week history of intermittent fever, severe headache, and profound fatigue. He describes the headache as diffuse and often retro-orbital, not relieved by simple analgesia. He also reports generalised muscle aches and occasional night sweats. He denies cough, shortness of breath, or gastrointestinal symptoms. His medical history is unremarkable, and he takes no regular medications. He lives on a rural property in Queensland where he raises sheep and cattle. On examination, he is afebrile at the time of consultation (37.2°C), blood pressure is 130/80 mmHg, pulse is 85 bpm, and respiratory rate is 16 breaths per minute. Physical examination is otherwise unremarkable; specifically, there is no rash, lymphadenopathy, or focal neurological signs. Initial laboratory investigations reveal a white cell count of 7.5 x 10^9/L (neutrophils 65%, lymphocytes 25%), haemoglobin 145 g/L, platelets 250 x 10^9/L. Liver function tests show AST 85 U/L (normal <40), ALT 90 U/L (normal <40), alkaline phosphatase 110 U/L (normal <130), total bilirubin 15 µmol/L (normal <20). C-reactive protein is elevated at 45 mg/L (normal <5). A chest X-ray performed a week prior was reported as normal. Given the clinical presentation and epidemiological context, which of the following is the most appropriate initial diagnostic investigation?

A 45-year-old man presents to the emergency department with sudden onset of severe headache, described as the worst headache of his life. He also reports nausea and photophobia. On examination, he is alert but in distress, with a blood pressure of 160/100 mmHg, heart rate of 90 bpm, and no focal neurological deficits. A CT scan of the head is performed and shows no acute intracranial hemorrhage. What is the most appropriate next step in management?

A 68-year-old male presents with worsening headaches and blurred vision 3 months post-embolization. The attached image was obtained. Which of the following is the MOST appropriate next step in management?

A 65-year-old man presents to the emergency department with sudden onset of severe headache, nausea, and vomiting. He has a history of hypertension and is currently on antihypertensive medication. On examination, he is alert but in distress due to the headache. His blood pressure is 180/110 mmHg, heart rate is 90 bpm, and he has no focal neurological deficits. A CT scan of the head shows a subarachnoid hemorrhage. Which of the following is the most appropriate initial management step in this patient?

A 45-year-old woman presents to the emergency department with sudden onset of severe headache, described as the worst headache of her life. She also reports nausea and photophobia. Her past medical history is significant for hypertension, which is poorly controlled. On examination, she is alert but in distress, with a blood pressure of 180/110 mmHg, heart rate of 90 bpm, and temperature of 37°C. Neurological examination reveals neck stiffness but no focal neurological deficits. A CT scan of the head is performed and shows no acute intracranial hemorrhage. What is the next best step in management?

A 32-year-old woman presents to the emergency department with a 2-day history of fever, headache, and a rash that started on her wrists and ankles and has now spread to her trunk. She recently returned from a camping trip in the Northern Territory. On examination, she is febrile at 38.5°C, with a heart rate of 110 bpm and blood pressure of 100/70 mmHg. The rash is maculopapular and blanching. Laboratory tests reveal thrombocytopenia and elevated liver enzymes. Which of the following is the most likely diagnosis?