The diseases to be alerted to when the inner thigh tendon hurts may include strain injury, inguinal lymphadenitis, lumbar disc herniation, hip impingement syndrome, and femoral head necrosis. 1. Strain injury: It may be due to the strain of the myofascia of the inner thigh caused by excessive exercise, which is prone to the symptom of pain in the inner thigh tendon. 2. Inguinal lymphadenitis: the groin is the inner thigh. It may be caused by inguinal lymphadenitis, under the stimulation of inflammation, the inner thigh muscle spasms, causing the inner thigh tendon pain. 3. Lumbar disc herniation: It may be caused by herniation of lumbar 2-4 intervertebral discs, which presses the local nerve roots and causes the symptom of inner thigh tendon pain. 4. Hip impingement syndrome: Hip impingement syndrome may be caused by strenuous exercise, prolonged excessive weight-bearing, trauma, etc., and patients will have symptoms of medial thigh pain and hip pain during activities. 5. Necrosis of the femoral head: The early stage of necrosis of the femoral head is mainly characterized by soreness or pain in the hip or groin area, i.e., the patient may experience pain in the medial thigh tendon. The inner thigh tendon pain may also need to be alert to other diseases, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.