Introduction This discussion focuses on comparing and contrasting migraine headaches and Post-Concussive Syndrome (PCS). PCS encompasses a broad range of signs and symptoms that typically occur after a head injury, while a migraine is a clinical condition that generally arises without any preceding head trauma. Despite these differences, both conditions can present with similar signs and symptoms, making a thorough history and physical examination crucial for an accurate diagnosis.
Presentation Patients with PCS usually have a history of head injury, which can vary in severity and may be recent, distant, or even unrecognized in cases of amnesia. PCS symptoms can be categorized into three groups:
Patients presenting with a migraine may exhibit some of the same symptoms as those with PCS, but there are notable differences. Migraines rarely occur after a head injury, although it is possible. Migraines are generally classified into three types: without aura, with aura, and prodromal.
Pathophysiology The pathophysiology of PCS is complex and primarily occurs at the cellular level, as neuroimaging studies often show no obvious structural brain damage. PCS is generally considered a result of mild traumatic brain injury. After a head injury, metabolic reactions in the brain become atypical. For instance, while blood glucose levels may rise, the brain consumes less glucose and significantly more oxygen than normal. These atypical cellular processes have led researchers to develop more effective treatments for PCS (Wright et al., 2013).
The pathophysiology of migraines is also not fully understood, though it is thought to involve the trigeminal vascular system, which controls neurogenic inflammation, meningeal vasodilation, and central sensitization of the brain. Low levels of serotonin may induce vasodilation on the brain’s surface, but this connection remains poorly understood. Various triggers, such as pregnancy, menstruation, hypertension, strong odors, tobacco use, motion sickness, sleep deprivation, and certain foods (e.g., red wine, chocolate, nuts), have been reported to provoke migraines (Schub & Parks-Chapman, 2018).
Assessment and Diagnosis For both conditions, the healthcare provider should conduct a thorough history and physical examination. A recent head injury history is more indicative of PCS, while a history of severe headaches without physical injury points towards migraines. The patient should be questioned about the headache’s location and severity, as migraines are typically unilateral with severe, debilitating pain. Although there is no specific lab test for migraines, serum and urine tests can help rule out infection, drug abuse, or organ failure. Subarachnoid hematomas can present with severe headaches and may be diagnosed with cerebral spinal fluid analysis. Migraines occurring fewer than 15 times a month over three months are considered episodic, while those occurring more than 15 times a month over three consecutive months are classified as chronic (Schub & Parks-Chapman, 2018).
PCS typically presents after a head injury, but not all head injuries are readily recognized or remembered, especially in cases involving multiple injuries, such as motor vehicle accidents. Providers should perform a detailed history and physical examination, establishing a cognitive baseline with input from family members or friends. Key information includes the duration, severity, and progression of symptoms, as well as any impact on daily life and work. Head injury screening too