These too things are entirely unrelated. Botox injected into the face will have zero effect on the underarms.
I Got 50 Units Botox for Facial Wrinkles & 3 Hours Later my Armpits Started Hurting. Is This Normal?
Doctor Answers 5
No not normal.
That does not mean that the two things are not related. At the risk of sounding completely paranoid, I recommend that you discuss this with your internist. It is worth having your axillary (armpit) lymph nodes examined for enlargement. While BOTOX does not make them swell, perhaps the treatment you received made already swollen lymph nodes tender. This is not a reported phenomena. However, it is known that certain things can trigger lymph node tenderness when the lymph nodes are abnormal such during mononucleosis or other conditions that cause the lymph nodes to swell. Please do not dismiss this symptom.
Botox and pain
If you had Botox injected into your facial muscles-and 3 hours later you were experiencing under-arm pain, I can think of no logical reason why or how they could possibly be related.
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Armpit pain after botox
I cannot think of any logical reason you would get this with facial treatment. I am sure it is just coincidental.
These answers are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.