 [ Symptoms ] i develop sinusitis and severe cough in winter i also have hair fall problem kindly advise [ Disease ] in my opinion no chance laminectomy can cause the above disc to herniate however when you have a herniated disc there is always the above or below disk pulging or slightly herniated as well by time it increased in my opinion you solved the problem by doing laminectomy but did not treat the reason which is obviously anterior pelvic tilt + increases lumber lordosis i recommend physical therapy to treat the cause mechanicaly speaking  instead of treating the end product problem good luck