Hello doctor,
I got the influenza vaccination about a week ago and have a swollen and painful lump in my armpit.
Hi,
Welcome to icliniq.com.
I understand your concern. You are having lymph node swelling axillary post influenza vaccination. Influenza vaccine is a very safe vaccine. Although some may have local pain, swelling, and fever. Some may have local lymphadenopathy.
Lymphadenopathy is a swelling of lymph node (normal gland present in our body, which function as clearing harmful substances and providing immunity). Local and systemic reactions mostly began between day 1 and day 2.
When a lymph node rapidly increases in size, its capsule stretches and causes pain. Pain is usually the result of an inflammatory process. It is a reactive response of the lymph node to the vaccination. So no need to worry.
It can be managed by simple Paracetamol or anti-inflammatory medication such as Serratiopeptidase. It should resolve within a week. If it is associated with fever or any other site enlargement of lymph node you can visit your physician.
I hope this helps.
The Probable causes:
Reactive lymphadenitis.
Investigations to be done:CBC (complete blood count), ESR (erythrocyte sedimentation rate), USG (ultrasound) axillary lymph node.
Differential diagnosis:Lymphadenopathy.
Treatment plan:anti-inflammatory Paracetamol 500 mg twice or thrice daily or Aceclofenac, Paracetamol, and Serratiopeptidase combination tablet twice daily for three days.
Regarding follow up:Follow up after three days.
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