Which of the following is a side effect categorized under "A" for phenothiazines?

Phenothiazines are a class of medications primarily used as antipsychotics and to manage nausea and vomiting. When categorizing side effects, the "A" classification typically refers to anticholinergic side effects. These side effects arise from the blockade of acetylcholine receptors, leading to symptoms such as dry mouth, blurred vision, constipation, urinary retention, and an overall reduced ability to sweat.

The significance of understanding anticholinergic effects is crucial as they can significantly impact a patient's comfort and adherence to medication regimens. These side effects result from the pharmacological action of phenothiazines and are important for nurses and healthcare professionals to monitor when administering these medications. Recognizing such side effects ensures appropriate patient education and management strategies can be implemented to mitigate discomfort.