Central nervous system stimulants narcolepsy

Substance-Induced Anxiety Disorder. Numerous medicines and drugs of abuse can produce panic attacks. Panic attacks can be triggered by central nervous system stimulants such as cocaine, methamphetamine, caffeine, over-the-counter herbal stimulants such as ephedra, or any of the medications commonly used to treat narcolepsy and ADHD, including psychostimulants and modafinil. Thyroid supplementation with thyroxine (Synthroid) or triiodothyronine (Cytomel) can rarely produce panic attacks. Abrupt withdrawal from central nervous system depressants such as alcohol, barbiturates, and benzodiazepines can cause panic attacks as well. This can be especially problematic with short-acting benzodiazepines such as alprazolam (Xanax), which is an effective treatment for panic disorder but which has been associated with between dose withdrawal symptoms. 

One of the oldest uses for dextroamphetamines is in the treatment of narcolepsy, a sleep disorder characterized by constant daytime fatigue and sleepiness, with a disturbance in nighttime REM sleep (the period of sleep when dreams occur). During the day or other periods of time when they would normaly be awake, people with narcolepsy often experience sudden episodes of REM sleep. They may also suffer from sleep paralysis and/or cataplexy, an abmpt, total loss of muscle control. Central nervous system stimulants like dextroamphetamine help to relieve these symptoms. 

Methylphenidate is considered a mild central nervous system stimulant that affects the brain and nerves, relieving fatigue, and inducing clearer thoughts for relatively short periods. According to the DEA, possible effects experienced by those who do not have ADHD or narcolepsy include increased alertness, excitation, and euphoria. Increased energy and increased mental clarity may be experienced for a short period. 

Amphetamines and similar central nervous system stimulants have been available for many years, but the substantial abuse liability and potential cardiovascular adverse effects have largely limited their use to the treatment of narcolepsy and attention-deficit-hyperactivity disorder. There has also been some utilization of amphetamines to combat sleepiness during military operations. 

Methylphenidate (MPH, Ritalin ) is a central nervous system stimulant that is used for the treatment of attention deficit disorders, with and without hyperactivity, and narcolepsy. MPH has two chiral centres and is marketed as a racemic mixture. It is known that d-threo-MP is pharmacologically more active than l-threo-MPH. The drag is rapidly metabohzed in humans to the inactive ritalinic acid. High-throughput analysis with chiral selectivity is demanded for the bioanalysis of MPH and its major metabolite. 

Ephedrine, given im/iv/sc, is indicated for the treatment of acute hypotensive states, treatment of Adams-Stokes syndrome with complete heart block, stimulation of the central nervous system (CNS) to combat narcolepsy and depressive states, treatment of acute bronchospasm, treatment of enuresis, and treatment of myasthenia gravis. When given in nasal form, ephedrine is used in the treatment of nasal congestion, promotion of nasal or sinus drainage, or relief of eustachian tube congestion. 

Medication is given to stimulate the central nervous system in order to induce a therapeutic response. These include medications that treat narcolepsy, attention deficit disorder (ADD), obesity, and reversal of respiratory distress. 

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