Final answer:
When diagnosing a febrile seizure, a complete blood count (CBC) and lumbar puncture may be performed to rule out serious central nervous system infections. A lumbar puncture is critical in certain situations, like children under 12 months of age, complex seizures, or when symptoms suggest a possible infection.
Step-by-step explanation:
A complete blood count (CBC) and lumbar puncture should be performed when diagnosing a febrile seizure.
It is important to rule out central nervous system infections, such as meningitis or encephalitis, as the cause of the seizure. While not all febrile seizures require a lumbar puncture, it may be considered in certain situations, such as in children younger than 12 months, those presenting with complex febrile seizures, or when there is a suspicion or presence of central nervous system infection symptoms.
When a child experiences a febrile seizure, healthcare providers must assess the situation thoroughly to ensure that they are providing the correct diagnosis and treatment options for the patient's safety and well-being.