David D. Burns recommends breathing exercises for those suffering from anxiety. One such breathing exercise is a 5-2-5 count. Using the stomach (or diaphragm)—and not the chest—inhale (feel the stomach come out, as opposed to the chest expanding) for 5 seconds. As the maximal point at inhalation is reached, hold the breath for 2 seconds. Then slowly exhale, over 5 seconds. Repeat this cycle twice and then breathe 'normally' for 5 cycles (1 cycle = 1 inhale + 1 exhale). The point is to focus on the breathing and relax the heart rate. Regular diaphragmatic breathing may be achieved by extending the outbreath by counting or humming.
People with panic disorder may also experience comorbid bipolar disorder, alcohol or substance use disorder, or medical problems that accompany their panic. It is common for individuals with panic disorder to have thyroid problems, respiratory issues, heart problems, or feelings of dizziness (APA, 2013). In general, it has been reported that 93.7% of people with panic disorder meet criteria for at least one other medical or mental disorder (Arch, Kirk, & Craske, 2017). That being said, comorbidity is not inevitable with panic disorder and it is important to discuss your symptoms thoroughly with a medical professional. Additionally, the causality of the link between panic disorders and medical problems remains unclear.
The problem with catastrophizing is that it is rigid thinking. Suppose you worry that you’re having a heart attack every time you experience some chest pain. It’s usually easy for a health professional to distinguish between anxiety and a heart attack. But catastrophizing resists new information. Even though, your doctor has done tests in the past and has reassured you many times, you worry that this time will be different. Your exaggerated fear is preventing you from changing your thinking, and is keeping you stuck.
People with panic disorder often worry about when the next attack will happen and actively try to prevent future attacks by avoiding places, situations, or behaviors they associate with panic attacks. Worry about panic attacks, and the effort spent trying to avoid attacks, cause significant problems in various areas of the person’s life, including the development of agoraphobia (see below).