Hello, I understand your concern
This small lump after vaccination is common & usually harmless. It happens due to the body’s immune response or mild local inflammation.
Mild pain, swelling, or a small lump can last 1–2 weeks
Some firm nodules may take 4–6 weeks to settle
Next Steps
Cold compress/ice pack: 10–15 minutes, 3–4 times/day
Wrap ice in a cloth—do not apply directly on skin
Keep the area clean & dry: Normal bathing is fine
Avoid: Massaging, pressing, squeezing
Warm packs
Oils, turmeric, toothpaste, or home balms
If the child is uncomfortable: Paracetamol can be given as per weight & pediatrician’s advice
Health Tips
Red flags:
Redness rapidly increasing
Severe pain or child not moving the leg
Pus, foul smell, or high fever
Lump growing or not improving after 6 weeks