Causes include a low brow,injection near the brow,injecting the frontalis muscle but not the corrugators,overactive lateral orbicularis muscles,effect on the levator muscle.See the doctor who treated you to determine the problem - eye drops can help a levator problem.
With cosmetic dosages of Dysport it is highly unlikely to develop systemic side effects such as tachycardia. I would seek an evaluation with your primary medical doctor to rule out other possible causes of these symptoms.
Thank you for your question. There are no contraindications between most Augmentin and Dysport. I recommend having a follow up with your doctor. Hope that helps. Best of Luck!