Sudden symptoms can sometimes indicate a serious underlying condition that requires prompt medical intervention. Appropriate Treatment: Once the cause is identified, a doctor can recommend the most appropriate treatment plan to address your symptoms and improve your health. What to do: Contact your doctor or go to the nearest emergency room immediately if you experience any of the following: Chest pain or pressure Sudden loss of vision or speech, Severe stomach pain, Difficulty breathing, Fainting or dizziness, Seizures, Paralysis or weakness