my son mohit bajaj age 18 year was suffering pain in left hip and the pain was gone his left leg, his MRI opinion is

(1) disc desiccation at L4-L5 and L5-S1 levels

(2) posterior disc herniation at L4-L5 and L5-S1 levels resulting in secondary canal stenosis and nerve roots compression along with other findings as described

(3) posterior disc bulge at L3-L4 level along with associated features as described

please suggest the treatment