 Often, herniated discs are not diagnosed immediately, as patients present with undefined pains in the thighs, knees, or feet.Symptoms may include sensory changes such as numbness, tingling, paresthesia, and motor changes such as muscular weakness, paralysis, and affection of reflexes.If the herniated disc is in the lumbar region, the patient may also experience sciatica due to irritation of one of the nerve roots of the sciatic nerve.