When the adductor (inner thigh muscle) is strained or pulled it can result in inner thigh or groin pain. The most common muscular injury is a strain, which results if the muscle is overstretched. This pain will be localized to the inner thigh or groin region and will greatly restrict mobility. Running or high impact sports make an individual prone to muscle strain. Turning or stopping suddenly during an activity can also result in a muscle strain. Exercise induced inner thigh pain can range from severe to mild, depending on the extent of muscle strain. Mild discomfort will result if the muscle connecting the thigh bone to the pubic bone is strained, while it will be more severe if there is a complete rupture. If during exercise or activity you feel a persistent ache or acute excruciating pain, inner thigh muscle or groin strain has likely occurred, so the activity should be discontinued.
- Inguinal (groin) hernia: This is one of the most common forms of a hernia. They occur in the groin area, where the skin of the thigh intersects with the torso. This type of hernia can cause inner thigh discomfort. One way to determine if a hernia is causing your thigh pain is to check for any abnormal bulges in the groin area. This bulge is a clear indicator of an inguinal hernia. Hernias can be a condition that you are born with or one that is caused by many other factors. Obesity, substantial lifting, and excessive/rough coughing are just three potential causes.
- Kidney stones: Inner thigh pain may even be a symptom of kidney stones. This pain can either be localized to the thigh or groin area. The main cause of kidney stones is a high level of a specific substance present in your urine that creates a small crystal like matter. Inner thigh pain caused by kidney stones is very intense and presents itself quite suddenly. This pain will occur in spasms; it is severe and then diminishes in between the spasms.
- Osteoarthritis: This is the inflammation of the joints that results from cartilage degeneration. This degeneration of the cartilage can be due to aging, genetics, an accident, or disease. The most prominent symptom of this medical condition is pain in the affected joints. This pain typically gets worse as the day progresses. Other symptoms include creaking, swelling, and warmth in the joints.
- Pubis Dysfunction: This is predominantly experienced by pregnant women. The pelvic ligament that keeps their pelvic bone in place becomes relaxed, which makes the pelvic bone unstable. The ligaments become relaxed due to a hormone that makes the ligaments pliable to facilitate the baby's exit. The main symptom of this medical condition is intense pain in the pelvis, which can radiate down into other regions, including the inner thigh. This pain will be aggravated by walking, standing, or rolling.
- Osteosarcoma: This cancerous growth manifests in an individual's bone. This type of bone cancer typically affects children and teenagers; this is the most common form of bone cancer in children. The growth typically occurs in the shin, thigh, or upper arm. The symptoms include bone pain, which can manifest as inner thigh pain, restricted mobility, tenderness, swelling, and redness at the site of the growth.
Other causes of inner thigh pain are side effects of surgery, septic arthritis, sciatica, lipoma, and edema.