Some reaction at injection sites is common. Let’s distinguish normal from concerning.
Normal Reactions
Immediately After
- Small amount of bleeding
- Slight stinging
- Tiny bump at site
- Mild redness
Hours to Days After
- Small bruise
- Mild itching
- Slight firmness
- Minor swelling
These typically resolve within a few days.
Potentially Concerning
Signs to Watch
- Spreading redness beyond immediate area
- Increasing pain over hours/days
- Warm/hot to touch with redness
- Pus or discharge
- Fever
- Large, hard lump that doesn’t resolve
These could indicate infection or severe reaction.
Minimizing Reactions
Technique
- Proper site rotation
- Clean injection technique
- Room temperature medication
- Appropriate needle angle
Site Care
- Don’t rub the area after
- Gentle pressure only
- Keep area clean
- Wear loose clothing over site
Rotation Importance
Why rotate sites:
- Prevents lipodystrophy (tissue changes)
- Reduces local irritation
- Improves absorption consistency
- Allows areas to heal
Rotation Strategy
- Keep a log or use an app
- Divide abdomen into quadrants
- Include thighs in rotation
- Don’t reuse exact spot for at least 1-2 weeks
Lipodystrophy
Long-term concern with repeated injections:
- Hard lumps under skin
- Indentations
- Affects absorption
- Prevented by proper rotation
When to Contact Provider
- Signs of infection
- Severe or spreading reaction
- Allergic symptoms (hives, difficulty breathing)
- Persistent large lumps
- Any concern that worries you
Most reactions are minor - but always trust your instincts!
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