The armpit pain, arm pain and hand numbness on one side of a woman may be caused by physiological factors or pathologic factors, such as cervical spondylosis, breast hyperplasia, frozen shoulder and other conditions. Patients can be observed for a few days, if after rest, hot compresses continue not to relieve, can go to the hospital to determine the cause of the disease and then take targeted treatment. First, physiological factors: if you use one side of the hand for a long time to pull heavy objects, or to expand the chest exercise is too strong, resulting in excessive muscle tension, or sleep on one side of the arm is under pressure, there may be a side of the armpit pain, arm pain, if it affects the local blood circulation, may also be accompanied by numbness of the hand, you can carry out a local massage and hot compresses, after resting, the symptoms can generally be relieved. Second, pathological factors: 1, cervical spondylosis: if sedentary or often low head, resulting in cervical disc herniation, there may be shoulder and back stiffness symptoms, when the nerve root is compressed, there may be a side of the armpit pain, arm pain, numbness of the hand symptoms. Normally, you should do more neck massage and activities, avoid sitting for a long time, and reduce the time of head-down activities; 2, breast hyperplasia: generally caused by hormone secretion disorders, endocrine disorders, usually before menstruation may appear on one side of the armpit pain, arm pain, and may be accompanied by numbness of the hand. Under the guidance of the doctor, you can take breast nucleus dispersal tablets, Mentholatum tablets or breast fetish elimination tablets and other drugs for treatment. Usually keep a good mood, avoid eating hormone-containing food and drugs; 3, frozen shoulder: long time strain or improper activities lead to frozen shoulder, there may be pain in the peri-shoulder area of the symptoms, may also be accompanied by a side of the armpit pain, arm pain, numbness of the hand, arm lifting difficulties and other symptoms, you should do more shoulder massage, but also can be combined with acupuncture, small needle or physiotherapy.