When you lie down, you will have a panic attack, considering that you may suffer from cardiac insufficiency, cardiac neurosis, digestive system diseases and so on. 1. Cardiac insufficiency: when suffering from cardiac insufficiency, due to the increase in the volume of blood returning to the heart when lying down, resulting in bruising of the lungs, so there will be panic attacks, shortness of breath, dyspnea and some other symptoms, and in severe cases, sitting down to breathe, coughing up pink foamy sputum. 2. Cardiac neurosis: patients suffering from cardiac neurosis due to excessive attention to their own symptoms, there may also be lying down after the performance of panic, mainly and the psychological mood of excessive anxiety and tension. 3. Digestive system diseases: such as reflux esophagitis, bile reflux gastritis, duodenal ulcer and other diseases, lying down when the acid reflux, may also appear panic symptoms. Panic when lying down may also be due to other reasons, such as frequent episodes or longer duration, it is recommended to go to the regular hospital in a timely manner to identify the cause, and actively diagnosis and treatment.