This disease causes fluctuating muscle weakness and fatigue. Generalized weakness or tiredness may also occur. It denotes symptoms of physical weakness and loss of strength. Overdose symptoms may include extreme drowsiness, confusion, muscle weakness, and fainting. All generally result in worsening muscle weakness associated with muscle twitching. Other possible symptoms include feeling tired, weakness, and abdominal pain. Complications include ulceration, infection, nerve weakness or numbness and swelling. These include partial facial paralysis, muscle weakness, and trouble swallowing. Patients also present with nonspecific findings such as fatigue and excessive weakness. Common side effects include sleepiness, weakness, and dizziness. Symptoms include fever, weakness and headache. He referred to her trait of feeling compassion as both her strength and weakness. Symptoms typically include those of cardiogenic shock including shortness of breath, weakness, lightheadedness, and cough. Excessive doses in humans can result in vomiting, constipation, weakness, and confusion. In people with myasthenia gravis, muscle weakness and breathing problems may worsen.