Pain is felt when nerve endings present in the affected body tissues transmit information to the brain about the damage caused to the body. Often, these nerve fibers send such signals to the brain in case of injuries, accidents, and any other damage caused by an external stimulus. However, sometimes, one may experience sudden pain, which may be a cause for concern. Here are some types of pain that should not be ignored. Debilitating headaches Headaches may have various underlying causes, including migraine, strokes, meningitis, and encephalitis. Based on the symptoms, a healthcare professional can diagnose the health condition and suggest a treatment course. So, one must consult a doctor immediately in case of blinding or persistent headaches. Chest pain Although chest pain may not always indicate a heart attack, it is one of the most prominent symptoms of a heart attack and should not be ignored. Often, a heart attack takes place gradually, starting with fatigue, shortness of breath, and chest tightness. Thus, detecting it early can help cardiologists suggest the necessary steps to prevent its onset or alleviate its effects. Thigh or calf-muscle pain Pain in one of the thighs or calf muscles may be a sign of deep-vein thrombosis (DVT), wherein a blood clot is formed in one or multiple deep veins in the body. It commonly occurs on the legs and may be accompanied by swelling and skin redness. It is recommended to seek early diagnosis and treatment for this condition to prevent its effects from worsening. Abdominal pain Sudden shooting pain in the abdomen can be a symptom of various conditions, including gallstones, pancreatitis, appendicitis, and diverticulitis. One must consult a doctor immediately in case of consistent or severe abdominal pain, particularly if it is accompanied by symptoms like nausea and fever. Back pain Back pain is often the result of overexertion and incorrect posture; however, some cases of chronic back pain may indicate symptoms of health conditions like ankylosing spondylitis, herniated disk, and spinal stenosis. Treating chronic back pain early can help prevent the onset of such conditions or reduce the symptoms. Moreover, upper back pain may be a sign of aneurysm or heart attack and should not be ignored.