What is the recommended follow-up for a patient diagnosed with a severe headache that has persisted for three days?

The recommended follow-up for a patient diagnosed with a severe headache that has persisted for three days is to obtain a neurologic consult. This is essential because a headache that lasts for such a prolonged period can indicate a serious underlying condition, such as a subarachnoid hemorrhage, intracranial pressure issues, or other neurological disorders.

A neurologist has specialized training to evaluate complex headache disorders and can perform necessary diagnostic tests, such as imaging studies, to rule out any potentially life-threatening conditions. It is important to assess the severity and nature of the headache, the presence of any associated symptoms, and the patient's medical history. This specialized follow-up helps ensure that the patient receives a comprehensive evaluation and appropriate management, rather than simply treating the headache symptomatically without addressing a possible underlying cause.

The other options—immediate discharge, routine pain medication, and self-monitoring at home—do not provide the necessary level of evaluation and management needed for a severe, persistent headache, which could lead to delayed diagnosis and treatment of a serious condition.