Some people—often called “sensation seekers” or “thrillseekers”—do desire and actively seek out situations that give them a rush of adrenaline, like extreme sports or dangerous jobs, and may feel unhappy or agitated when they are unable to partake in adrenaline-boosting activities. Though such people are often called “adrenaline junkies,” the DSM does not currently recognize adrenaline addiction as a formal diagnosis. However, evidence does suggest that sensation-seekers may be more vulnerable to other addictions, such as substance abuse.