### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
there was a discomfort in my left leg after using a cross trainer. i have a history of lower back pain on and off, controlled through back exercise. the pain was pinching sensation, forcing me to sit down - and it would go away. i took physiotherapy sessions ( IFT and SWD). now the pain has gone but still fee - tingling, numb sensations, like something is crwaling in my left leg. Alo a bit of slight numbness on my left lips. is this due to the SWT/IFT or what?

### output:

Hi, thank you for providing the brief history of you. The symptoms mentioned by you are classical to understand this as a lumbar disc degenerative disease. As the pain can be symptomatically controlled by Short wave diathermy (SWD) and Inferential therapy (IT) the major understanding of the biomechanics of the spine is advised. In most cases the disc gets degenerative changes and lose water as aging progresses and also due to wear and tear. Like the lumbar spine is the load bearing and highly mobile joint. Taking an MRI of the lumbar spine will help understand the pathology of the disc and the nerve root getting pinched. Based on the clinical examination and Correlation with the MRI of lumbar spine will help understand making a spine rehabilitation program. Also, the therapist and the patient needs to understand and discuss the rehabilitation process since spine is an important structure and needs a careful therapeutic approach. In my clinical practice most patients respond well when a spine rehabilitation program is made and processed further. For any more questions you are always welcome and I will be happy to provide you all assistance you need. Regards Jay In Chat Doctor. 