There are many reasons for pain in the octosus area, as follows: 1, caused by cold, easily in the cold weather, living environment cool, humid or thin clothing and other conditions, so be sure to pay attention to warmth. 2, because of excessive exertion to make the pain in the octosus area, long periods of sedentary, etc. will not be relieved, stretching and tightening of the muscles and can not be flexible to carry out the pressure is too much, bringing strain on the muscles. Therefore, you should exercise more. 3, women should also consider pelvic endometriosis, you can go to the gynecology department for ultrasound examination. The diseases considered may include lumbosacral disorders, lower back pain, sciatica, lower limb impotence, urinary discomfort, irregular menstruation, abdominal distension, pelvic inflammatory disease and other conditions. If there is pain in the pachymetry area, it is important to go to the hospital for examination and early treatment.