Namaste, what exactly is your question. "Is there an Ayurvedic recommendation that will allow me to eat my Belgian chocolate without the skin patches?"
Chocolate triggers skin issues in many people, overall you are better off just avoiding the chocolate of course, however the fact you get such an acute reaction means you have a definite doshic imbalance.
For the experts here, please describe the skin patches in color, complexion, attributes (itchy or not) etc. Also please give a description of your tongue, if there is any coating or if it appears clear.
Arjun