What is the duration for the physical therapy treatment for cervical disk herniations, and is physical therapy needed, or home exercises are enough?

Varies : It varies in part based on the severity of your symptoms and also your initial response. It is fairly common to go 3/ week for 6 weeks and then transition to a home program. But everyone is different and so it is based upon individual progress.

Home exercises: are definitely NOT SUFFICIENT! Pt is needed which should consist of ACTIVE (observed exercise, range of motion)and possibly PASSIVE Tx (traction)! Get a referral to an established Rehab oriented Physical Therapy service!

Highly individual: Many, if not most, patients will benefit from physical therapy as part of conservative therapy for a herniated cervical disc. Pain control medicines, muscle relaxants & anti-inflammatories are first line.Physical therapists can instruct in avoiding painful positions & appropriate exercise as well as treat with ice/heat, traction, ultrasound, TENS, bracing. Home therapy follows after a few sessions