I doubt that it's the weed. It could have been caused by the cracker.

It may be: Dermatitis Herpetiformis (DH), which is an important associated disorder or complication of celiac disease which is manifested in the form of a skin rash.http://www.csaceliacs.org/dh_defined.php

The reason that I mentioned it is because you seem to have gotten this after the cracker, which probably contains the ingredient Gluten. People with celiac disease (spelled coeliac in England) can not ingest Gluten, which is a protein found in wheat, rye, and barley. I have Celiac disease, but didn't get Dermatitis Herpetiformis.

It could also be a wheat allergy - which is a different condition than Celiac disease. Wheat allergies can also case skin rashes. Wheat is now listed in the top 8 food allergens along with peanuts, tree nuts, milk, fish, shellfish, eggs and soy.
http://www.wheat-free.org/wheat-allergy.html
Breukelen advocaat Reviewed by Breukelen advocaat on . Medical Emergancy Well for me it is. About two das ago I ate a Leary Bicuit (crackers, cheese and weed) and the following day I broke out in a rash and weird parts of my body swelled up such as some fingers and my right eye. Now, it's not too bad, but my mom is concerned and I would hate to be taken to doctor and diagnosed with a weed allergy. It's been like ethis for two days now, any help would be incredibly appreciated. Rating: 5