Which condition is NOT treated by Pregabalin?

Pregabalin is primarily used for the treatment of specific types of neuropathic pain and certain anxiety disorders. Notably, it's effective in conditions such as fibromyalgia, postherpetic neuralgia, and painful diabetic peripheral neuropathy. These conditions include chronic pain syndromes that involve nerve damage or increased sensitivity to pain.

In contrast, Alzheimer's disease is not a condition treated by Pregabalin. While Pregabalin may have certain effects on neurotransmitter modulation, its primary indications do not extend to Alzheimer's. Treatment for Alzheimer's typically focuses on medications that enhance cholinergic function or address symptoms of cognitive decline, none of which involves the use of Pregabalin.

Thus, the reason for selecting Alzheimer's disease as the correct answer lies in understanding the specific use cases of Pregabalin, which does not align with the treatment of neurodegenerative conditions like Alzheimer's.