My left thigh is throbbing and feels like a spasm. i'm lactose and have diabetes type 2. also polyneuropathy and ridculoneuropathy?

Considerations: You could very well be experiencing a metabolic or diabetic radiculopathy involving the distribution of the femoral nerve, but you could also possess a sensory involvement with the lateral femoral cutaneous nerve, called meralgia paresthetica.

Neuropathy: Diabetic neuropathic pain is usually bilateral. There are exceptions however. This pain may not be due to diabetes. See your doctor to get this sorted out.