Final answer:
Considering the patient's current medication list and allergies, it is advisable to prescribe gabapentin as a primary medication for managing neuropathic pain associated with CRPS. However, caution should be taken due to the patient's reported allergy to pregabalin.
Step-by-step explanation:
Gabapentin, an anticonvulsant, is commonly used to treat neuropathic pain, a common symptom of CRPS. The formula for gabapentin is C₉H₁₇NO₂, and its mechanism of action involves modulating the activity of neurotransmitters, particularly gamma-aminobutyric acid (GABA). This helps to alleviate pain signals sent by damaged nerves.
It's important to note the patient's reported allergy to pregabalin, a medication similar to gabapentin. While these drugs share similarities, individual reactions may vary, and cross-allergies are possible. Therefore, cautious monitoring is necessary when prescribing gabapentin to ensure the patient does not exhibit adverse reactions similar to those experienced with pregabalin.
In conclusion, considering the patient's current medication list and allergies, gabapentin is a suitable choice for managing CRPS-associated pain. However, close monitoring for potential adverse reactions is crucial due to the reported allergy to pregabalin.