Đi khám bệnh nếu cơn đau của bạn thay đổi bất ngờ, hoặc trở nên tồi tệ hơn. Uống thuốc giảm đau do bác sĩ kê toa. Cân nhắc tiến hành điều trị y tế. Tham khảo ý kiến bác sĩ về biện pháp TENS. Nhận biết dấu hiệu cảnh báo cụ thể cho tình trạng bệnh lý của bạn.

Given the above summary, write a detailed text in English for it.
Treatments may be available to help manage changes in your condition. Treatment of pain should always first be directed toward identifying and treating the underlying cause before just symptom relief. If you have not seen a doctor about your pain, and your pain has been persistent, medical attention is warranted. Prescription pain medications are stronger than over-the-counter products, and are available in oral forms as well as topical products. These products often contain controlled substances that can be addictive, such as opiates. Some prescription opiate-free products are available, such as anti-inflammatory agents and tramadol.  Older antidepressant agents, called tricyclics, some anticonvulsant drugs, and muscle relaxers are commonly prescribed to help manage chronic pain conditions. These agents work in different ways to control pain signals sent to and from the brain, and to relax muscle tissue surrounding the painful areas.  Prescription only patches are also available. Some are applied directly over the painful area, these typically contain active ingredients like lidocaine, and some are applied anywhere that allows the medication to be absorbed into your bloodstream, like patches that contain fentanyl. In addition to prescription pain medications, many procedures are available that are designed to treat conditions involving pain. Physical therapy, nerve blocks, localized anesthetics, acupuncture, electrical stimulation, or even surgery may improve your pain.  Chronic pain symptoms are sometimes controlled by using nerve block injections that are performed as an outpatient. Let your doctor know if you are allergic to contrast dye, which is commonly used during the procedures. Depending on the site of the injection, common side effects include temporary numbness and soreness in the area of the injection site. Some procedures can result in droopy eyelids, temporary stuffy nose, and temporary difficulty swallowing. For some types of chronic pain, stimulating the nerves in the area can help to reduce...