Struggling with Anxiety-Disorder? Learn why. Some people take so much tension that they become mentally unwell. Increasing tension takes the form of a catastrophic disease like anxiety. Anxiety is a disease in which the patient does not have control over his heart and brain, the patient suffers from problems like flatulence, increased heartbeat, and sleepiness. There are many problems in every human's life, some problems are big or some are small. Problems are small or big people come under tension due to problems. Anxiety report in the USA: A official report estimated that over 20% of adults have an Anxiety disorder. Most of them are women.