What Causes Numbness In The Upper Thighs In A Type 2 Diabetic?
A few possibilities
I read your question carefully and I understand your concern.
There may be several causes for your internal thigh numbness. Given your history of diabetes the first diagnosis to think of would be that of femoral neuropathy. It is due to dysfunction of the femoral nerve which is commonly due to trauma or compression in the pelvic area, but is also often encountered in diabetes patients. The most appropriate test for the diagnosis would be nerve conduction studies.
Another cause to be considered would be that of lumbar spine issues with nerve root compression in the back. It is less likely as usually it is associated with some back pain or stiffness, but it manifest with isolated numbness in the lower limb. Nerve conduction studies mentioned above should be able to differentiate between the two.
A simple muscle strain would be another possibility in which case it should subside gradually over several weeks.
Management would depends on nerve conduction studies finding, usually physical therapy, pain treatment when needed are sufficient, rarely is surgery needed when there is a compression evidenced.
I remain at your disposal for other questions.