Final answer:
Adolescence to the mid-30s is the typical age range for the diagnosis of panic disorder, closely associated with early adulthood and the onset of middle adulthood.
Step-by-step explanation:
The age group that is usually more likely to be diagnosed with panic disorder is adolescence and the mid-30s. This aligns with the period of early adulthood, which coincides more or less with the 20s and early 30s, and the start of middle adulthood in the mid-30s. It is during these stages that individuals are actively forming intimate relationships, possibly completing their education, establishing their careers, and may begin to experience the physical signs of aging and increased risk of health issues. Notably, in early adulthood, health problems tend to be minor, and studies have shown a significant percentage of people diagnosed with panic disorder fall within the 20-30 age range.