The pain in the left lateral thigh of women can be caused by the following causes: 1, dermatomal neuritis: the patient can have pain in the lateral thigh dermatomal innervation area, which is stabbing pain or hidden pain, radiating pain, which should be checked, often for a pain of the size of a palm area. 2, hip joint greater rotor bursitis: there can also be pain in the proximal lateral thigh, which can be unilateral or bilateral, during movement or The pain is very obvious when walking long distances, and can be accompanied by symptoms such as popping. 3, skin soft tissue tumors: If there is a tumor growth in the subcutaneous soft tissue, there can also be distension and pain in the outer thigh, which should be checked with ultrasound and MRI for diagnosis and treatment.