I find that botox and dysport usually help acne. I suggest skin care, peels or clear and brilliant at this time. Best, Dr. Emer.
Generally no it does not cause acne.
However, that does not mean that it is not causing acne in you. Some drug reactions are idiosyncratic. That means that some reactions are truly individualized. See your dermatologist for acne care to resolve your current acne outbreak. If the acne occurs again the next time you get cosmetic botulinum toxin, then that will confirm that this is how you respond. You will have to weigh the benefit of the treatment to the downside of the acne. You might decide the benefit outweighs the acne outbreak or not.
Dysport cannot cause acne but certainly if you had an irritation from the numbing cream you could get long-lasting irritation on you skin. An irritation is not acne, though the two do look similar at times. Your skin should clear over time or you can see a doctor for an Rx for the irritation. And in the future, opt for no numbing cream as something in it certainly lights up your skin. "This answer has been solicited without seeing this patient and cannot be held as true medical advice, but only opinion. Seek in-person treatment with a trained medical professional for appropriate care."