Can Botox dynsport cause intense swelling of eyes, bad headaches and neck pain?

Thank you for your question. Some patients will experience a mild headache after Botox, intense swelling of eyes and neck pain are not common. Speak with a medical professional regarding your symptoms and have them assessed. Best. 

Botox has not been shown to cause headaches, in fact it is one of the ways to treat migraine headaches.  It seems that in your situation your symptoms are caused by residual sinusitis.  You should see your doctor for evaluation and possible refferal to an ENT specialist. 

Some people can get temporary headaches that can last for a few days after botox injections in the forehead, but these are usually mild. The severity of your headache along with the other symptoms of eye swelling and neck pain concern me greatly! A potential issue with botox can also be drooping of the brow / forehead or even the eyelid itself, but I have never heard of it being responsible for actual eyelid swelling. You should seek care from your medical doctor or ENT. 

Botox is a great injection for reducing these lines around the face.  Botox is not known to cause the side effects that you are describing.  I would definitely consult your internist or an ENT for examination.  Best, Dr. Green

I don't think your Dysport injection was responsible for the sx's you described. I would recommend seeing an ENT surgeon for an evaluation of your sinuses sooner rather than later