Is a Botox injection bump/welt normal after two and a half weeks? (Photo)

Thank you for sharing your question.  I would recommend seeing your injector in follow up to identify the cause of the swelling. This may have been due to the injection causing a deeper seated bruise but it may also indicate ineffective paralysis of the musculature.  Hope this helps.

Though uncommon inflammatory reactions in any injection site may occur. Fortunately they resolve over time. If it persists follow up with your surgeon.

This is unusual but certainly does occur. It is probably part of  a muscle that has not been affected but if not gone in another week or so contact your doctor