temporary effects of inhaling smoke or vapor

[MedusaGrower]

What is known about the effect smoking or vaporizing has on the skin? I use a vaporizer but I think I am getting some smoke along with the vapor. Just now, after taking 5 good pulls from my vaporizer, my face felt itchy and I went to look in the mirror and noticed one unmistakable welt, and other small spots of redness. Clearly, the substances I'm inhaling are affecting the blood flow in my face. Is this a serious health concern?

[NextLineIsMine]

Bizarre, you sure its nothing but weed youre inhaling?

[Storm Crow]

Sensitization and Allergy to Cannabis sativa Leaves in a Population of Tomato Sensitized Patients.
Sensitization and Allergy to Cannabis sativa Leaves in a Population of Tomato (Lycopersicon esculentum)-Sensitized Patients. (http://marijuana.researchtoday.net/archive/5/2/1629.htm)

[Purple Banana]

That's bizarre... Sounds like a mild allergy. Have you ever had any reactions to smoked/vaped/eaten cannabis before? There is a small percent of the general population who do have sensitivities and allergies to cannabis, but if it's never happened before, then that just boggles me!

As for your concern on the smoke getting on your skin? Did the smoke/vape ONLY hit your face, if at all? Sometimes allergic reactions can stem from inhaled substances- things that are already in your bloodstream- and show up on your face, which is what you use (I hope!) to vape the bud. If it happens anymore, or gets worse, let your doctor know about it!