A nurse is collecting data from a client who is taking sumatriptan. Which of the following reports indicates a therapeutic response to the medication?

D. The absence of headache indicates a therapeutic response to sumatriptan. Sumatriptan is specifically indicated for the acute treatment of migraine attacks with or without aura and the acute treatment of cluster headache episodes. The absence of headache indicates that sumatriptan has effectively relieved the headache symptoms. A. Improved mood is not a direct therapeutic response to sumatriptan. While relieving headache pain may contribute to an improved mood, sumatriptan primarily targets headache symptoms rather than mood regulation. B. Increased bone mass is not a therapeutic response to sumatriptan. Sumatriptan does not affect bone metabolism or bone mass. Therefore, changes in bone mass would not be related to sumatriptan therapy. C. Sumatriptan is not used in the management of chest pain.