![]() However, some patients are apparently helped by selective serotonin reuptake inhibitors Selective Serotonin Reuptake Inhibitors (SSRIs) Several drug classes and drugs can be used to treat depression: Selective serotonin reuptake inhibitors (SSRIs) Serotonin modulators (5-HT2 blockers) Serotonin-norepinephrine reuptake inhibitors. Various drugs have been used, but none have clearly demonstrable efficacy. Intoxication typically causes hallucinations, with altered perception, impaired judgment. read more, or hallucinogens Hallucinogens Hallucinogens are a diverse group of drugs that can cause highly unpredictable, idiosyncratic reactions. Overdose can cause coma and, rarely, death. read more, ketamine Ketamine and Phencyclidine (PCP) Ketamine and phencyclidine are dissociative anesthetics that can cause intoxication, sometimes with confusion or a catatonic state. Psychologic dependence can develop with chronic use, but very little physical dependence is clinically apparent. read more, particularly marijuana Marijuana (Cannabis) Marijuana is a euphoriant that can cause sedation or dysphoria in some users. The activation of the reward system typically causes feelings of pleasure the specific pleasurable. ![]() ![]() read more or use of illicit drugs Overview of Substance-Related Disorders Substance-related disorders involve drugs that directly activate the brain's reward system. Fear is an emotional, physical, and behavioral response to an immediately recognizable external threat (eg, an intruder, a car spinning on. read more anxiety Overview of Anxiety Disorders Everyone periodically experiences fear and anxiety. Episodes can be triggered by interpersonal, financial, or occupational stress depression Depressive Disorders Depressive disorders are characterized by sadness severe enough or persistent enough to interfere with function and often by decreased interest or pleasure in activities.
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