Common side effects include dizziness, sleepiness, nausea, and heart palpitations. Occationally palpitations and shortness of breath may occur. Symptoms include fatigue, lightheadedness, headache, weakness, increased heart rate/heart palpitations, anxiety, and altered vision. Physical symptoms often include excessive blushing, excess sweating, trembling, palpitations, and nausea. Other symptoms may include fever, weakness, palpitations, and shortness of breath. Short periods may occur without symptoms or present with lightheadedness, palpitations, or chest pain. Short periods may occur without symptoms, or present with lightheadedness, palpitations, or chest pain. Typical symptoms include irritability, nervousness, palpitations, and heat intolerance. Additional signs are weakness, sore tongue, headaches, heart palpitations, irritability, and behavioral disorders. These events have been associated with arrhythmias, palpitations, tachycardia and myocardial infarction. In children GAD may be associated with headaches, restlessness, abdominal pain, and heart palpitations. Tremors can be an indication of hypoglycemia, along with palpitations, sweating and anxiety. Symptoms are typically decreased exercise tolerance, easy fatigability, palpitations, and syncope. They can produce a variety of nonspecific symptoms, which include headaches, sweating, anxiety and palpitations. Palpitations and dyspnea are hallmarks of panic attacks.