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Aribit (Aripiprazole) tablets. Aripiprazole, sold under the brand names Abilify and Aristada, among others, is an atypical antipsychotic. [8] It is primarily used in the treatment of schizophrenia, bipolar disorder, and irritability associated with autism spectrum disorder; [8] other uses include as an add-on treatment in major depressive disorder and tic disorders. [8]
Neuroleptic malignant syndrome (Combination of fever, muscle stiffness, faster breathing, sweating, reduced consciousness, and sudden change in blood pressure and heart rate)
Treatment in the initial state aims to attain an optimal tradeoff between good management of symptoms and side effects resulting from enhancement of dopaminergic function. The start of L-DOPA treatment may be delayed by using other medications such as MAO-B inhibitors and dopamine agonists, in the hope of delaying the onset of dyskinesias. [3]
Neuroleptic malignant syndrome (NMS) is a rare [5] [6] but life-threatening reaction that can occur in response to antipsychotics (neuroleptic) or other drugs that block the effects of dopamine. [ 1 ] [ 7 ] Symptoms include high fever , confusion, rigid muscles, variable blood pressure, sweating, and fast heart rate. [ 1 ]
Dopamine agonists are mainly used to treat Parkinson's disease, but also hyperprolactinemia and restless legs syndrome. [15] The side effects are predominantly collected from studies of Parkinson's disease, where dopamine agonists are commonly used as a first-line treatment with levodopa. [16]
Typical antipsychotics block the dopamine 2 receptor (D2) receptor, causing a tranquilizing effect. [5] It is thought that 60–80% of D2 receptors need to be occupied for antipsychotic effect. [5] For reference, the typical antipsychotic haloperidol tends to block about 80% of D2 receptors at doses ranging from 2 to 5 mg per day. [5]
Extrapyramidal symptoms are most commonly caused by typical antipsychotic drugs that antagonize dopamine D2 receptors. [2] The most common typical antipsychotics associated with EPS are haloperidol and fluphenazine. [4] Atypical antipsychotics have lower D2 receptor affinity or higher serotonin 5-HT2A receptor affinity which lead to lower rates ...
The latter have a greater degree of anticholinergic and antihistaminergic activity, which can counteract dopamine-related side-effects. [172] Atypical antipsychotic drugs have a similar blocking effect on D 2 receptors; however, most also act on serotonin receptors, especially 5-HT 2A and 5-HT 2C receptors. Both clozapine and quetiapine appear ...