Reshma is a class 12 student. She is experiencing symptoms like dizziness, sleeplessness, shortness of breath for the past few months. She constantly worries about her future. According to the above case, Reshma maybe experiencing-

Generalised Anxiety Disorder (GAD)

GAD is characterized by excessive and persistent worry about a variety of things, including the future. People with GAD often feel like they are constantly on edge and that they can't control their worries. They may also experience physical symptoms such as dizziness, sleeplessness, and shortness of breath.

Reshma's symptoms of constant worry about her future, as well as her physical symptoms, are all consistent with GAD.