If your neck and shoulder feel tight, achy, or just “not right” months after finishing treatment for head and neck cancer, you’re describing something we hear from patients regularly. Stiffness and swelling in this area are two of the most common lingering effects of head and neck cancer treatment, and it can come from more than one source — surgery, radiation, or both. The reassuring part is that it’s very responsive to physical therapy, even when it shows up well after treatment has ended.
Neck Dissection and Shoulder Function
If your treatment included a neck dissection — surgery to remove part of the neck — some stiffness and guarding around the incision is expected as it heals. But there’s also a more specific issue worth knowing about: the spinal accessory nerve, which controls the muscle that helps you shrug your shoulder and raise your arm overhead, runs directly through the area where neck dissections are performed. Depending on the extent of surgery, that nerve can be stretched, irritated, or in some cases affected more significantly, which shows up as a shoulder that feels weak, droops slightly, or aches with overhead movement, in addition to whatever tightness is coming from the incision itself.
This combination is sometimes called shoulder dysfunction after neck dissection, and it’s genuinely common — not a sign that anything went wrong with your surgery. It usually responds well to a physical therapy program built around restoring shoulder blade control and strength, alongside gentle work on the surgical scar tissue itself.
Radiation Fibrosis: A Slower, More Gradual Tightening
Radiation therapy affects the neck differently than surgery does. Rather than an acute injury that heals on a predictable timeline, radiation can cause the skin, muscle, and connective tissue in the treated area to gradually thicken and tighten over time — a process called radiation fibrosis. This is part of why neck stiffness can appear or worsen months, or even a couple of years, after radiation has finished, which catches a lot of patients off guard when they expect things to simply keep improving in a straight line.
The encouraging news is that radiation fibrosis is not a one-way street. Consistent, appropriately dosed stretching and manual therapy can meaningfully improve range of motion and comfort, even years out from treatment. The key is starting sooner rather than later and staying consistent, since fibrotic tissue tends to respond better to steady input over time than to occasional stretching.
How Physical Therapy Helps
Because neck and shoulder stiffness after head and neck cancer treatment can come from a surgical source, a radiation source, or both at once, a thorough evaluation makes a real difference in getting the right treatment plan. A therapist experienced in head and neck cancer rehab will typically look at your scar mobility, your neck and shoulder range of motion, and your shoulder blade strength and control, then build a program around what’s actually driving your specific stiffness. That might include scar and soft tissue mobilization, a structured stretching routine for the neck and chest, and targeted strengthening for the muscles that support your shoulder blade if the spinal accessory nerve was affected.
Many patients are also dealing with related effects of head and neck cancer treatment at the same time — things like swallowing changes, trismus (difficulty opening the jaw), or lymphedema in the face or neck — and those often benefit from being addressed together rather than in isolation. You can read more about how our team approaches the full picture of head and neck cancer recovery on our head and neck cancer rehabilitation page.
When to Loop In Your Care Team
Ordinary post-treatment stiffness is a good topic for your next physical therapy visit rather than an emergency. But a few things are worth flagging to your care team promptly: a new lump or mass, sudden or significant swelling, skin changes like redness or breakdown over the treated area, or new or worsening trouble swallowing or breathing. Those symptoms deserve a medical evaluation. For the more typical picture — tightness, reduced range of motion, or a shoulder that doesn’t move quite like it used to — physical therapy is usually exactly the right next step, and there’s no need to wait for it to become severe before asking for a referral.
If you’re in the Covington or Baton Rouge area and dealing with neck or shoulder stiffness after head and neck cancer treatment — whether you finished treatment last month or a few years ago — we’d love to help you work toward feeling more comfortable and mobile again. Reach out any time by emailing Gin@GeauxFight.com or giving us a call. There’s no pressure, and it’s never too late to ask.