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Both typical and atypical antipsychotics can cause tardive dyskinesia. [50] According to one study, rates are lower with the atypicals at 3.9% as opposed to the typicals at 5.5%. [ 50 ] Although quetiapine and clozapine are atypical antipsychotics, switching to these atypicals is an option to minimize symptoms of tardive dyskinesia caused by ...
Drug withdrawal, drug withdrawal syndrome, or substance withdrawal syndrome [1] is the group of symptoms that occur upon the abrupt discontinuation or decrease in the intake of pharmaceutical or recreational drugs. In order for the symptoms of withdrawal to occur, one must have first developed a form of drug dependence.
There has been a study that suggests antipsychotics are associated with possible cortical reconfiguration and gray matter loss, [19] but correlational data also suggests patients who consume antipsychotics, like people with schizophrenia, tend to engage in unhealthy habits like smoking which may exacerbate gray matter loss.
Where risks or harms is the reason for withdrawal, this will usually have been prompted by unexpected adverse effects that were not detected during Phase III clinical trials, i.e. they were only made apparent from postmarketing surveillance data collected from the wider community over longer periods of time.
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The British National Formulary recommends a gradual withdrawal when discontinuing antipsychotics to avoid acute withdrawal syndrome or rapid relapse. [19] Symptoms of withdrawal commonly include nausea, vomiting, and loss of appetite. [20] Other symptoms may include restlessness, increased sweating, and trouble sleeping. [20]
Other symptoms may include restlessness, increased sweating, and trouble sleeping. [66] Less commonly, vertigo, numbness, or muscle pains may occur. [66] Symptoms generally resolve after a short time. [66] Tentative evidence indicates that discontinuation of antipsychotics can result in psychosis, as a temporary withdrawal symptom. [67]
Such withdrawal effects can include cholinergic rebound, an activation syndrome, and motor syndromes including dyskinesias. These adverse effects are more likely during rapid changes between antipsychotic agents, so making a gradual change between antipsychotics minimises these withdrawal effects. [161]