Some medical conditions, like thyroid abnormalities and anemia, as well as certain medications, can produce severe anxiety. Examples of such medications include stimulants like methylphenidate (Ritalin) or amphetamine salts (Adderall), diabetes medications like metformin (Glucophage) and insulin, antimalarial medications like quinine, as well as corticosteroid withdrawal, such as withdrawal from dexamethasone (Decadron). As individuals with panic disorder seem to be at higher risk of having a heart valve abnormality called mitral valve prolapse (MVP), this possibility should be investigated by a doctor since MVP may dictate the need for special precautions when the individual is being treated for any dental problem. While the development of panic attacks has been attributed to the use of food additives like aspartame, alone or in combination with food dyes, more research is needed to better understand the role such substances may have on this disorder.
Meditation may also be helpful in the treatment of panic disorders. There was a meta-analysis of the comorbidity of panic disorders and agoraphobia. It used exposure therapy to treat the patients over a period. Hundreds of patients were used in these studies and they all met the DSM-IV criteria for both of these disorders. A result was that thirty-two percent of patients had a panic episode after treatment. They concluded that the use of exposure therapy has lasting efficacy for a client who is living with a panic disorder and agoraphobia.
Hyperventilation syndrome may occur when a person breathes from the chest, which can lead to overbreathing (exhaling excessive carbon dioxide in relation to the amount of oxygen in one's bloodstream). Hyperventilation syndrome can cause respiratory alkalosis and hypocapnia. This syndrome often involves prominent mouth breathing as well. This causes a cluster of symptoms, including rapid heart beat, dizziness, and lightheadedness, which can trigger panic attacks.