If you or your child have primary immunodeficiency (PI), preventing infections is a big part of staying healthy. Many people with PI use immunoglobulin replacement therapy to supply antibodies that their immune system cannot produce on its own.
Some get these antibodies through intravenous infusions (IVIg) in a clinic but many eventually switch to subcutaneous immunoglobulin (SCIG) therapy. SCIG is given just under the skin and can often be done at home after training.
Home infusions give you flexible scheduling and steady antibody levels. But they also have a learning curve, especially with infusion-site reactions.
The good news is that these reactions are mild and temporary. “Nearly three out of four people have short-term, mild reactions,” said Danielle Nance, MD, a hematologist with Banner Health.
Read on to learn what’s normal and what’s not so you can feel more confident in managing your treatment at home.
What is a normal SCIG infusion site reaction?
After a SCIG infusion, you might see small changes on your skin where the medication was given. These reactions happen because the immunoglobulin fluid stays in the tissue for a little while before your body absorbs it.
“A common reaction at the infusion site looks like a small bubble of fluid under the skin, along with pink or slightly warm skin over the area,” Dr. Nance said.
These reactions are usually short-lived and a normal part of the infusion process. You might also notice:
- Mild to moderate swelling at the infusion site
- Mild tenderness
- Itching around the area
The swelling happens because the medicine needs time to move from the tissue into your bloodstream.
“As your body takes in the immunoglobulin, the fluid bubble gradually shrinks and redness should go away," Dr. Nance said. “Most reactions at the infusion site get better within 24 to 48 hours after the medication is absorbed.”
Gradual improvement is a good sign that your body is taking in the medicine as expected.
Ways to ease common SCIG side effects
Although mild swelling and redness are normal, they can still feel uncomfortable. Fortunately, there are some things you can do to help ease irritation at the infusion site.
- Use warm or cold compresses: Many people find relief by putting a warm or cool pack on the area where they received the treatment. The choice depends on personal preference. Warm packs can help the medicine spread easier through the tissue, while cool packs may help reduce redness and swelling.
- Try using numbing cream: If you're worried about pain from the needle, your provider might suggest a numbing cream like lidocaine. Apply it to your skin before the injection to help reduce pain.
- Let the medication reach room temperature: Cold medication can make infusions more painful. Let your SCIG product sit at room temperature before use to help lessen pressure and discomfort. Do not warm the medication in a microwave, hot water or a heater, as this can damage it.
- Move slowly during the infusion: Moving a little during the infusion can help the medicine spread evenly in the tissue. Some people find that shifting positions slightly or stretching gently can help reduce pressure at the infusion site.
- Massage the area after the infusion: Once the needles are removed, gently massage around the area. This can help reduce swelling and make you more comfortable.
- Stay hydrated and have a small snack: Doing this before or after your infusion can help you feel better during treatment.
When should you call your nurse or provider?
Mild reactions are normal but you should see your health care team if certain symptoms occur. According to Dr. Nance, more serious or long-lasting symptoms might mean there is a problem, like an infection or an infusion reaction.
Contact your provider or nurse if you notice:
- Swelling or redness lasting longer than 48 hours
- Redness that spreads or worsens after the infusion
- A very large bubble that disappears and then returns
- Fluid leaking from the infusion site
- Increasing pain at the site
- Fever higher than 101°F (38.3°C) lasting more than six hours
- Headaches, chills or nausea that do not improve within 24 to 48 hours
You should also reach out if you feel uncertain about your infusion technique or if something seems wrong. Dr. Nance said, "Having extra visits or check-ins with the nurse can help you feel more confident and supported when you start doing your treatment at home."
Managing infusion anxiety in adults
Starting home infusion therapy can feel overwhelming at first. Many people worry about needles, equipment or whether they are doing everything correctly. Dr. Nance said these feelings are very common.
“Being worried about infusions, needles and managing supplies at home can be hard,” she said. “Feeling nervous about needles is normal and healthy. Everyone gets more comfortable with infusions at their own pace. With time and practice, most people gain confidence.”
Here are some tips to reduce anxiety during infusions:
- Get training and support: Good training from your care team can help make the process safer and easier. Some patients do their first infusion in a provider’s office or with a nurse nearby.
- Keep your supplies organized: Storing everything in one place, like a storage bin or tote, can help make infusion day easier and less stressful.
- Use breathing techniques: Take slow, deep breaths before starting to help calm nerves and feel more in control.
- Create a comfortable setting: Listening to soft music, watching a movie or reading while getting the infusion can help pass the time and take your mind off the needles.
Helping children cope with SCIG infusions
Children with primary immunodeficiency might find it harder to get used to regular infusions. Younger children may not understand why they need treatment. Older children might feel anxious about pain or losing control.
As a parent, here are ways to help your child feel supported:
- Acknowledge emotions: Children might feel scared, upset or sad about taking infusions. Dr. Nance suggests talking about these feelings openly. You can also share your own feelings honestly. Being open can help build trust.
- Create a predictable routine: Rituals can help kids feel more secure on infusion days. A routine might include choosing a favorite TV show, listening to music or using a favorite blanket.
- Offer small choices: Let your child make small choices, like where to sit, what music to listen to, or which bandage to use. This helps them feel more in control.
- Use praise and positive reinforcement: Encouraging children and giving small rewards can help them feel good about their progress. Dr. Nance often tells families that perfection isn’t the goal; administration of the medication is the goal.
Learn more about subcutaneous injections for children.
Takeaway
Learning to manage SCIG at home can take some patience but many people find that the benefits are worth it. SCIG therapy can help lower your chance of infections, give you more energy and let you spend more time on things you enjoy.
Some mild reactions at the infusion site are normal. Knowing what to expect can help make home infusion therapy feel easier and less stressful.
If you ever feel unsure, overwhelmed or frustrated, talk to your health care team or a Banner Health specialist. With practice, support and time, home infusion therapy can become a normal part of taking care of your health.
