Arm swelling after mastectomy, what physio can help with

What lymphoedema actually is

Lymphoedema is swelling that happens when the lymphatic system cannot drain fluid normally. This is often because lymph nodes were removed or affected by cancer treatment.

After a mastectomy, this can show up as swelling in the arm or hand on the treated side. Sometimes it appears soon after surgery, sometimes months or years later.

What general physiotherapy can help with

We can help with gentle movement, positioning, and general guidance to support the arm and encourage normal use, alongside practical advice for daily life.

We can also help with general strength and mobility in the shoulder and arm, which is often affected alongside the swelling itself.

What needs a specialist instead

Specific compression therapy and specialist lymphoedema management, such as manual lymphatic drainage or compression garment fitting, need a provider trained specifically in that area.

We say this rather than working outside our scope, and can point you toward the right kind of help if that is what your situation needs.

Living well with lymphoedema

Many people manage lymphoedema well long-term with the right combination of movement, skin care, and, where needed, specialist support.

We are glad to be part of that picture, working alongside any specialist care you already have, and honest about where our role fits.

What to watch for

New or rapidly worsening swelling, redness, warmth, or fever can signal an infection and need prompt medical attention, not just physiotherapy.

We explain these signs clearly, so you know when to seek help quickly rather than wait.