Shoulder pain from multiple sclerosis typically feels like burning, tingling, jabbing, or electric shock sensations, though it can also present as a deep muscular ache or stiffness depending on the cause. About 35% of people with MS report shoulder pain, making it one of the more common pain sites in the disease. What makes it confusing is that MS can cause shoulder pain through several different pathways, and each one feels distinct.
Nerve Pain vs. Muscle Pain in the Shoulder
MS shoulder pain generally falls into two categories: neuropathic (nerve-driven) and musculoskeletal (muscle and joint-driven). They feel quite different, and many people with MS experience both at different times.
Neuropathic shoulder pain comes directly from damaged nerve fibers in the brain or spinal cord. It tends to feel like burning, tingling, jabbing, or electrical sensations. The pain can appear without any physical trigger, sometimes flaring up at rest or at night. It may come in sudden waves or persist as a constant low-level burn. This type of pain doesn’t necessarily correspond to anything you can point to in the shoulder joint itself, which is part of what makes it so disorienting.
Musculoskeletal shoulder pain, on the other hand, feels more like the aching, tightness, or soreness you’d associate with a strain or overuse injury. It often worsens with movement and may feel like stiffness or a pulling sensation around the shoulder blade and upper arm. This type is usually caused by spasticity, changes in posture, or compensating for weakness elsewhere in the body.
How Spasticity Affects the Shoulder
Spasticity is one of the most common drivers of MS shoulder pain. In the upper limbs, it tends to affect the muscles that flex and pull the arm inward. Over time, this creates a pattern where the shoulder is drawn forward and down, with the arm held close to the body. The muscles around the shoulder girdle become chronically tight, which restricts range of motion and produces a deep, aching soreness.
This isn’t the sharp, electric pain of nerve damage. It’s more like the feeling of muscles that have been clenched for hours and won’t release. People often describe it as heaviness or a band-like tightness across the top of the shoulder and into the neck. The pain tends to be worse after periods of inactivity, like first thing in the morning, when the muscles have had time to stiffen further.
Lhermitte’s Sign and Referred Pain
One of the more distinctive MS sensations is Lhermitte’s phenomenon: a sudden, electric shock-like feeling that shoots through the body when you bend your neck forward. It occurs in roughly 25 to 33% of people with MS and can radiate into the shoulders and down the arms. It’s brief but startling, lasting only a second or two, and it’s directly caused by damaged nerve tissue in the cervical spinal cord.
Even outside of Lhermitte’s, lesions in the cervical spine can generate shoulder pain that mimics a pinched nerve or disc problem. A single plaque in the spinal cord can produce abnormal sensory signals that travel outward to the shoulder area, creating pain, tingling, or even localized inflammation in tissue that is otherwise healthy. This has been recognized since the 1870s, when the neurologist Charcot first described shoulder and pelvic girdle pain as symptoms of MS. The pain feels real and localized in the shoulder, but its origin is in the spinal cord.
Pain From Mobility Aids and Overuse
A significant portion of MS shoulder pain has nothing to do with nerve damage at all. People who use canes, crutches, or wheelchairs place enormous repetitive stress on the shoulders, and research on spinal cord injury populations shows that shoulder pain is actually more common in people using crutches and canes than in manual wheelchair users. The shoulders weren’t designed to bear body weight day after day, and the result is often overuse injuries like rotator cuff strain or impingement.
It’s not just the mobility device itself. When you rely on your upper body for transfers, pressure relief, and reaching from a seated position, the shoulders absorb forces they wouldn’t normally handle. This type of pain feels like a conventional shoulder injury: sharp pain with overhead movements, aching after activity, and tenderness around the front or top of the shoulder. It can coexist with neuropathic pain, making it harder to sort out what’s causing what.
How Common Shoulder Pain Is in MS
In a cross-sectional study of 115 people with MS, about 35% reported shoulder pain in the preceding 12 months. That placed it alongside upper back pain (33%) and below knee pain (56%) and wrist pain (44%). Overall, roughly 61% of participants had chronic upper limb pain of some kind. Shoulder pain in MS is common enough that it shouldn’t be dismissed as unrelated to the disease, but it also warrants investigation since it can stem from treatable mechanical causes.
What Helps With MS Shoulder Pain
Management depends heavily on which type of pain you’re dealing with. For spasticity-related shoulder pain, stretching the muscles of the anterior shoulder girdle (the front of the shoulder and chest) is a priority. Stretches should be slow and gentle, held for 20 to 60 seconds at the end of a comfortable range. Strengthening exercises focus on the posterior shoulder girdle, meaning the muscles behind the shoulder blade that pull the shoulder back into better alignment. Seated scapular rows, shoulder presses, and latissimus pull-downs are commonly recommended.
For neuropathic pain, the approach is different because the pain originates in the central nervous system rather than in damaged tissue. Medications that calm overactive nerve signaling are the primary tool, and physical therapy may still help by improving overall function and reducing secondary strain.
Sleep positioning is worth experimenting with. Subacromial pressure measurements show that lying on your back produces the lowest pressure in the shoulder joint, while sleeping on your side or stomach with arms overhead increases it. If your shoulder pain worsens at night, switching to a supine position with a pillow supporting the affected arm may reduce discomfort, though the evidence on sleep position and shoulder pain is still limited.
For overuse-related pain from mobility aids, the focus shifts to protecting the shoulder from further mechanical damage. This might mean adjusting the height of a cane, switching propulsion techniques in a wheelchair, or building strength in the rotator cuff muscles to better absorb repetitive forces. A physical therapist familiar with MS can help distinguish between the different pain sources and target each one appropriately.