Frozen Shoulder: The Three Stages and How Physio Helps

If you've been told you have a frozen shoulder, you've probably already discovered how misleading the name is. It isn't frozen in the sense of being numb or cold — it's stiff, often painfully so, and the shoulder can feel like it's seized up from the inside. The medical term is adhesive capsulitis, which refers to the capsule surrounding the shoulder joint thickening and tightening, gradually restricting movement.

What catches most people out is that frozen shoulder doesn't behave like a typical injury. It doesn't peak and then steadily improve. Instead, it moves through three distinct stages, each with its own pattern of pain and stiffness, and each requiring a slightly different approach to treatment. Understanding which stage you're in makes a real difference to how physiotherapy can help — and how you should be treating your shoulder day to day.

Stage one: freezing

This is the stage that brings most people to see a physio. Pain develops gradually, often with no obvious cause, and tends to be worse at night or when lying on the affected side. Reaching, dressing, or reaching behind your back all start to hurt, and movement gradually becomes more limited as the pain increases. This stage can last anywhere from a few weeks to several months.

The priority here is calming things down, not forcing movement. Aggressive stretching at this stage tends to backfire, aggravating an already irritable joint. Instead, treatment focuses on pain relief, gentle range-of-motion work within a comfortable limit, and advice on activity modification — including how to sleep more comfortably and which movements to avoid. We'll often also talk about pacing: doing enough to keep the shoulder moving without provoking a flare-up. For some patients, working alongside your GP on pain management during this stage makes the rest of the recovery considerably more manageable.

Stage two: frozen

The pain during this stage usually starts to settle, but the stiffness takes over. Movement becomes noticeably restricted — reaching overhead, behind your back, or out to the side can feel genuinely blocked, not just uncomfortable. This is often the most frustrating stage, because the shoulder feels stuck even though the sharp pain of the first stage has eased. It can last for several months.

This is where structured physiotherapy has the most to offer. We use manual therapy to maintain and gradually improve the joint's available range, combined with a specific programme of mobility exercises designed to work at the edge of your current stiffness without triggering another flare. It's a fine balance — push too hard and pain returns; do too little and the joint stays tight for longer than it needs to. Regular review during this stage lets us adjust the programme as your shoulder responds, rather than sticking to a generic set of exercises that may not suit where you are in the process.

Stage three: thawing

Eventually, and often without a clear turning point, movement starts to come back. This thawing stage can take anywhere from several months to a couple of years to fully resolve, though most people notice steady, encouraging progress rather than a sudden return to normal.

The focus here shifts from protecting the joint to actively rebuilding it. Months of restricted movement usually mean the surrounding muscles — particularly around the rotator cuff and shoulder blade — have weakened and lost some of their normal coordination. A graded strength and conditioning programme helps restore control, endurance and confidence in the shoulder, so you're not left with a joint that moves freely but still feels unreliable when you reach for something on a high shelf or go back to the gym. This is also the stage where we look at any compensatory habits you may have picked up — many people unconsciously start moving through their neck or upper back instead of the shoulder, and that pattern can linger long after the joint itself has recovered.

What to expect overall

Frozen shoulder can be a genuinely long process — commonly a year or more from start to finish — and that timeline alone can be disheartening. But the stages are a useful map. Knowing that pain-dominant weeks are meant to give way to stiffness-dominant months, and that movement genuinely does return, helps you judge whether things are progressing normally or whether it's worth getting checked.

It's also worth having your shoulder properly assessed early on, since frozen shoulder can be confused with other causes of shoulder pain — a rotator cuff tear or impingement, for example — which need a different treatment approach entirely. A clear diagnosis means the treatment matches the stage you're actually in, rather than guessing.

If your shoulder pain or stiffness has been building for more than a few weeks, or you're not sure which stage you're dealing with, it's worth getting it assessed properly rather than waiting it out. Our team at our Vauxhall clinic can talk you through what's going on and build a plan around the stage you're currently in.