Final answer:
Michaela might be diagnosed with Caffeine Intoxication Disorder due to her symptoms of overstimulation from excessive caffeine intake, aligning with the criteria outlined in the DSM-5.
Step-by-step explanation:
Based on the DSM-5, Michaela might be diagnosed with Caffeine Intoxication Disorder. Symptoms such as agitation, restlessness, insomnia, a racing heart, gastrointestinal distress, and rapid, rambling speech are consistent with this diagnosis. These symptoms can emerge when a person consumes high levels of caffeine, which acts as a central nervous system stimulant.
Caffeine consumption is widespread and generally safe in moderate amounts, but excessive intake can lead to several negative health effects, including those experienced by Michaela. As caffeine blocks adenosine receptors, leading to increased alertness and reduced drowsiness, this can escalate to a state of overstimulation and result in intoxication symptoms. To address these issues, it is recommended to decrease or eliminate caffeine consumption, potentially seeing improvements in mental and physical health as demonstrated in medical case studies.