How to Avoid Injection Site Bruising

How to Avoid Injection Site Bruising


People with insulin-dependent diabetes take injections, lots of them.

Management of insulin-dependent diabetes inescapably requires injections, whether, with multiple daily insulin shots, the use of a continuous glucose monitor (CGM), or even an insulin pump. 

Injection site bruising, while not inevitable, can frequently occur. This article will outline strategies that you can employ to help avoid the nuisance, pain, and unsightliness of bruising at injection sites. 

Why do people bruise at injection sites?

When you take an insulin injection, a bruise may typically appear because the small blood vessels under the skin are accidentally damaged, leaking their contents into the surrounding tissue. 

It is perfectly normal to bruise from injections from time to time. Bruises from injections, while causing mild pain, are generally harmless and go away within a few days. 

People with diabetes are more susceptible to bruising simply because we take so many injections. It’s bound to happen, but there are ways to reduce the incidence and severity of them. 

Ways to reduce bruising 

Try these strategies to help reduce the incidence of bruising when taking insulin injections.

Use longer needles 

It may seem counterintuitive, but using shorter needles increases the likelihood that you will bruise.

When available, opt for longer syringe needles, 1ml instead of 0.5 ml, that will bypass the surface blood vessels, thus reducing bruising. 

Inject at a 90-degree angle 

While it may be easier to inject at a slant, try and inject at a 90-degree angle instead. This will improve the ease at which the needle goes into the skin, reducing the incidence of bruising. 

Change your syringes and lancets more often

Most syringes and lancets are meant to be single-use, which can be a hard regimen to remember and stick to.

Changing out old lancets and only using syringes one time will ensure that the point at the tip of the syringe stays sharp and is significantly less likely to bruise the user. 

Rotate sites! 

Remember to rotate your injection sites. Routinely using the same sites (and even general areas) for your insulin injections will definitely cause bruising, and can even hasten the development of scar tissue, which can lead to malabsorption of insulin, leading to higher blood sugars. 

Continuously rotating your sites can prevent all of this, including bruising! 

Ice the area

Ice the site where you will be giving an injection about 30 to 60 seconds before doing so. Ice helps to shrink the capillary blood vessels under your skin, reducing the likelihood of damage and bruising. 

Opt for technology

Although insulin pumps and continuous glucose monitor (CGM) technology are more expensive, opting for this type of diabetes management drastically helps to reduce the incidence of bruising, because site changes are far less often than multiple daily injections (MDI). 

Insulin pump sites are changed anywhere from every 3-6 days, and CGM sites are changed anywhere from every 7-10 days, helping people with diabetes avoid the stresses of injecting or lancing themselves every day, multiple times a day. 

Work with your doctor and insurance company to see if this can be a realistic option for you and your lifestyle. 

Avoid your belly button

People love injecting insulin in their stomachs – there’s lots of space and usually a good amount of fat, which is excellent for insulin absorption.

However, injecting too close to your belly button will cause bruising and pain. Aim to avoid any insulin injections within an inch or two of your belly button.

Up your iron intake 

People who suffer from anemia or low iron bruise much more easily. Your body needs iron to keep your blood cells oxygenated and healthy. 

Without sufficient iron from sources like beans, lentils, tofu, dark leafy greens, or even a supplement, you will be more susceptible to bruising. 

Aim for 8.7mg a day for men and 14.8mg a day for women, or check with your doctor if you think you may be suffering from anemia. 

Calibrate your medications

Being on certain blood thinners, such as Warfarin, Plavix, or even over-the-counter aspirin may put you at a higher risk for bruising.

Work with your doctor and medical team to see if you can take alternatives if you’re struggling with bruising. 

What to do if you develop a bruise after an injection

If you develop a bruise after an injection, fear not. Employ these helpful strategies to bring you quick relief:

  • If you feel pain immediately after injecting, apply gentle pressure on the site to help prevent the development of a bruise 
  • Do not massage or rub the injection site, as this will make the bruise worse
  • Treat the affected area with ice 
  • Do not inject insulin on or near the site until the bruise has healed completely
  • If the pain is significant, treat it with ibuprofen to reduce inflammation 
  • If you’re struggling with chronic bruising, contact your doctor and medical team 

Taking daily insulin injections can be painful, but it doesn’t have to leave lasting bruises on your skin.

Employing these strategies can help you drastically reduce the incidence of bruising when you inject insulin to manage your diabetes. 



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