There are many reasons why 12-year-old boys often panic, such as physiological phenomena, hyperthyroidism, arrhythmia and so on. 1. physiological phenomenon: 12-year-old boy in the case of strenuous exercise or emotional excitement, there may be panic, usually belongs to the normal physiological phenomenon, after sufficient rest can gradually ease, often do not need special treatment. 2. Hyperthyroidism: 12-year-old boy often panic may also belong to hyperthyroidism, hyperthyroidism can be manifested in panic, hand tremor, easy to sweat and other phenomena, the disease is due to the thyroid gland gland produces too much thyroid hormone caused. 3. Arrhythmia: abnormal changes in heart rhythm or heart rate, can show palpitations, panic, dizziness and other phenomena, so it can be suspected that 12-year-old boy often panic may be related to arrhythmia. There are many reasons why 12-year-old boys often panic, after the symptoms, we recommend timely medical examination, a clear diagnosis to give standardized treatment, do not ignore the symptoms, to take it lightly.