What Are the Signs of an Allergic Reaction to Marijuana?

Signs of an allergic reaction to marijuana may include hives.
Some experts say that allergic reactions to marijuana may actually be caused by the chemicals that were used to grow the plant.
Itching and rashes are common skin problems associated with an allergic reaction to marijuana.
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  • Written By: Alicia Sparks
  • Edited By: Heather Bailey
  • Last Modified Date: 29 July 2014
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If a person experiences an allergic reaction to marijuana, he could experience the same types of allergy symptoms as he would with pollen, bee stings, or other common allergens. He might develop skin rashes or hives or breathing difficulties and throat problems. For many people, these reactions aren’t dependent upon how they come into contact with the marijuana. This means they could have allergic reactions if they smoke it, ingest it, or even touch it. Not all experts are in agreement as to exactly what causes the allergic reactions, but anyone experiencing a reaction should seek immediate medical attention.

Signs of an allergic reaction to marijuana are similar to some of the same types of allergic reactions to other allergens. Common skin problems include itching, rashes, and hives. People also have reported wheezing, swollen and sore throats, and sinusitis. Extreme cases have included nausea and vomiting, chest tightening and anxiety attacks, and intestinal cramping. Some patients have even reported flu-like symptoms including body aches, chills, and fatigue.

Smoking marijuana might not be the only way to experience an allergic reaction. Some people have reported reactions from touching the plant. People who consume marijuana in other ways have also reported allergic reactions. For example, a person who injects liquids or eats food with marijuana in it can experience an allergic reaction.

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Some experts believe that this type of allergic reaction isn’t at all surprising, given the fact that marijuana is a plant and plants are allergens for many people. Others speculate that the reaction isn't actually caused by the marijuana, but rather to any chemicals used to grow it. Since some people use pesticides and other chemicals while growing marijuana, some people might have a reaction to these chemicals.

Whenever a person experiences any kind of allergic reaction to an unknown substance, or for an unknown reason, he should seek medical attention. Smoking marijuana might make a person hesitate to seek medical treatment, but like other kinds of allergic reactions, one to marijuana could become dangerous. While some allergy symptoms go away on their own, others require prescription medication. Skin rashes might go away in a few hours, for example, but chest tightening and difficulty breathing could become life-threatening.

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anon352208
Post 5

I was pruning a few of my plants. The next day I had a huge rash on both forearms. I lasted for six days and itched like hell.

Then my friend tells me, "Oh yea, that breed always made me itch but not like that. Next time, wear long sleeves and then wash it before you wear it again" Thanks. I will have to remember that next time.

anon343507
Post 4

I have a sister who is allergic to the smell. It causes her eyes to swell and burn and water, a severe headache, chest tightens and pain, her throat swells, and it makes her very tried. What can I do to help her as far as meds or treatment, or cure?

anon271669
Post 1

Thanks for this, really. I panicked when I touched some bud and touched my chest. Well, I ended up with hives wherever I touched. Just took some benadryl.

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