Which are medical applications of central nervous system drugs? (Select all that apply. One, some, or all)

A. Analgesia is a key medical application of CNS drugs. Opioids, acetaminophen (acting centrally), and certain adjuvant drugs act on the central nervous system to reduce the perception of pain. B. Seizure control is another important use of CNS drugs. Antiepileptic medications, such as phenytoin, valproic acid, and ethosuximide, act on the CNS to stabilize neuronal activity and prevent seizures. C. Depression is treated with CNS-acting drugs, including SSRIs, SNRIs, and tricyclic antidepressants, which modulate neurotransmitters like serotonin, norepinephrine, and dopamine to improve mood and emotional regulation. D. Anesthesia is a major medical application of CNS drugs. General anesthetics, sedatives, and hypnotics act on the CNS to induce loss of consciousness, sedation, or muscle relaxation for surgical and procedural purposes.