It’s difficult to condense the emotional and physical tolls that a mastectomy brings.

If you are having a mastectomy as part of your breast cancer treatment or as a preventative measure, your doctors will give you lots of information on what the procedure involves and what to expect.

Here at Live Better With, we have put together a list of the most common problems that can arise after a mastectomy to help you be prepared should you experience any of these.

Mastectomy: What will happen to your body after surgery?

Pain and altered sensation/sensitivity

It’s normal to experience some pain after a mastectomy, but your doctors will prescribe you medications to help reduce this. You may also notice changes to the way your skin feels in the affected area, for example, some people report numbness, tingling or itchy skin. This is usually from damage or irritation to nerve endings during the surgery. Some people also notice that the skin becomes more sensitive to touch after their surgery. All these changes in sensation should settle down with time as the nerves heal.

Scar Formation

As your skin starts to heal it will form a scar. Scar formation is the natural process of healing. Initially, you may notice that the area of skin surrounding the wound becomes raised and red or darker than the surrounding skin, but over time the scar will become flatter and paler in the majority of cases. It usually takes two years for this process to complete, but for some people, this can take longer. In a small number of individuals, excess scar tissue can form, resulting in a thick, raised scar known as a keloid scar. This is usually more common in people with darker skin.

How to reduce scarring:

●    As the area of skin on your chest starts to heal you might notice that it becomes itchy. Avoid scratching it or picking at any scabs that form as this will hinder the healing process and can make the scar worse.
●    Try covering the wound site with a barrier cream to keep out excessive moisture which can interfere with scar formation
●    Apply silicone gels or sheets to the area to reduce redness and encourage healing
●    Use oils or creams proved to reduce scar tissue formation and improve skin healing


If you have lymph nodes removed from under your arm as part of your mastectomy, then you are at risk of developing lymphedema in that arm. This is because your lymph nodes drain lymph fluid, and so removing them means there are fewer nodes to drain it away. The lymph fluid can then build up and cause swelling in the affected arm. 

The first signs of lymphedema can include:
–   A heavy sensation or an aching discomfort
–    Swelling
–    Fatigue with use
–    Numbness or tingling

In some cases, these symptoms develop before swelling is noticeable so let your doctor or nurse know if you are noticing any of the above.

However, there are lots of things you can do to help control any lymphedema:
–    Use compression sleeves if advised by your doctor
–    Do gentle exercises and weight training to help improve fluid clearance in the affected arm
–    Be careful with skin care to avoid infection of the lymph fluid and keep your skin in good condition
–   Apply specialised massage techniques known as manual lymphatic drainage to help clear excessive fluid

A note from our oncology nurse Cara: Please note that the arm where the lymph nodes were removed from will no longer be able to be used for medical procedures like taking blood and checking blood pressure.

Fluid collection or seromas

Some people may notice a swelling in the area where their breast tissue was removed at around day 7-10 after any drainage tubes have been removed. A collection of fluid called a seroma which is made up of clear bodily fluids is a part of a natural healing process for the body. The body will usually reabsorb this fluid but sometimes if there are excessive amounts the area can become uncomfortable or infected, and your doctor may need to drain it for you.

Wound infections

Like any wound, your mastectomy site may become infected. Signs of an infection include redness surrounding the wound site, the skin feeling hot to touch and sometimes you may even notice discharge from the wound itself. If you notice any of these, you’ll need to let your doctor or nurse know as you may need treatment with antibiotics.


We have also created a mastectomy guide with more information, tips and useful products that can help you feel more comfortable and confident after your surgery.