There's no way to be sure online, but this is highly suggestive of infection. Getting a second opinion in a smart thing to do at this time. Using better sterile technique in the future, might help to reduce these risks. Be sure to finish your antibiotics and good luck,
Dysport Side Effects -- See an Expert
This is likely due to infection. I definitely agree that you should be seen for an in person consultation and further evaluated. Please see an expert. Best, Dr. Emer
Dysport injection redness
Injection site redness (that is temporary) is not unusual after Dysport injections. A prolonged site of inflammation, a nodule, or a bump are all a lot less common. The possible explanations in your scenario include infection (which is appropriately treated with antibiotics) or a cyst (which may be more likely if it has occurred in the same spot previously). A cyst is essentially a bag of something--skin contents, oil--underneath the skin, and may be congenital or traumatic in nature. Some cysts can get repeatedly infected; if this is the case, they are typically best treated with excision, as both the lining and contents of the cyst must be removed. I hope your Dermatologist sheds more light on this issue; it sounds like you're on the right track to figuring this out. Good luck and here's to a speedy recovery.