NBCSN Nationally Certified School Nurse Practice Exam

The correct answer identifies blurred vision and muscle cramping as adverse effects associated with MDMA use. MDMA, also known as ecstasy, affects neurotransmitters in the brain and can lead to various physical side effects. One of the common effects is muscle cramping, which occurs due to the drug's impact on the body’s ability to regulate temperature and muscle function, often exacerbated in environments such as dance clubs or raves where individuals are likely to be active and overheated.

Blurred vision can also occur as a result of changes in perception and visual processing associated with the drug. Both of these symptoms can be uncomfortable and potentially dangerous, especially in combination with other aspects of MDMA use, such as increased physical activity and dehydration.

In contrast, while sudden extreme fatigue, rashes, and skin irritations can happen with various substances, they are not typically highlighted as common adverse effects of MDMA. Hallucinations and paranoia can occur but are more associated with higher doses or polydrug use rather than being a direct or primary effect of MDMA itself.