Final answer:
When evaluating a pregnant patient like Samantha Crosby with severe headaches in the last trimester, it is crucial to rule out serious conditions like preeclampsia and consider other types of headaches such as tension headaches or migraines. A thorough medical evaluation is immediately required to ensure the safety of both mother and fetus.
Step-by-step explanation:
When caring for a pregnant patient in the last trimester who is complaining of a severe headache, particularly if it is a long-standing issue as described by Samantha Crosby, several considerations should be taken into account. Primarily, it is essential to differentiate between common types of headaches such as tension headaches, which are characterized by tightening of facial and neck muscles and are quite prevalent, and more severe migraine headaches which involve blood vessel swelling and can be associated with nausea and disturbed vision. However, given Samantha's symptoms and pregnancy status, it is crucial to consider pregnancy-related complications such as preeclampsia, which can present with severe headaches, dizziness, and visual disturbances, especially in the third trimester. Immediate medical attention and thorough evaluation are required given the risk to both the mother and the fetus. Other differential diagnoses could include sinus headaches or even more serious conditions such as meningitis, depending on the presence of other symptoms such as fever or stiff neck.