Feature Image

Eczema – Medical Marijuana Research Overview

The following information is presented for educational purposes only. Medical Marijuana Inc. provides this information to provide an understanding of the potential applications of cannabidiol. Links to third party websites do not constitute an endorsement of these organizations by Medical Marijuana Inc. and none should be inferred.

Eczema is a term that describes a group of medical conditions that cause the skin to become inflamed and irritated. Studies have shown that topical cannabis alleviates the itching, swelling and redness associated caused by eczema and other inflammatory skin disorders.

Overview of Eczema

Eczema, or atopic dermatitis, is a skin condition that causes the skin to develop red, itchy rashes. The condition can develop at any age, but is most common in children. Rashes tend to develop on the face, behind the knees, inside the elbows, and on the hands and feet.

The appearance of the rash varies from person to person, and can feature red to brownish-gray patches, raised bumps that leak fluid and crust over, or cracked and scaly skin. The itching associated with eczema can at times be severe and scratching the affected skin worsens the rash, causing it to become more raw, sensitive and swollen.

The cause of eczema is unknown, but it is likely due to a combination of genetic and environmental factors. Stress, sweat, heat and humidity changes, certain soaps and detergents, particular fabrics, air pollution and the consumption of eggs, milk, peanuts, soybeans, fish and wheat have been shown to make symptoms worsen. The condition is not contagious.

Eczema is a long-lasting disease that has no cure. However, new outbreaks can be prevented and itching relief can be provided with medicated creams or ointments. The avoidance of harsh soaps and other irritants can help manage symptoms. Corticosteroid creams or ointments help control itching and inflammation. Additionally, creams that help repair damaged skin can be used to help maintain normal skin. However, these creams have side effects, including skin discoloration and an increased risk of infections.

Findings: Effects of Cannabis on Eczema

Research has repeatedly shown that cannabis is effective at alleviating symptoms of several skin conditions, including eczema. Cannabinoids have immunosuppressive properties, in turn making them potential therapeutic agents for treating inflammatory skin diseases7.

The endocannabinoid system (ECS) plays an important role in several skin regulatory functions. Researchers believe that skin conditions like eczema develop when there’s an imbalance in the ECS2. The cannabinoids found in cannabis can help mediate disruptions in the ECS by interacting with cannabinoid receptors (CB1 and CB2), which are found in abundance on the nerve fibers and cells of the skin13. Through these interactions with CB receptors, cannabinoids are able to help reduce skin inflammation, pain and itching3,10,12,13,14. Additionally, studies have found that through the activation of CB2 receptors, cannabinoids help alleviate, and in some cases reverse, skin inflammation damage8.

Studies examining cannabis’ effectiveness on treating eczema and other related skin conditions are vast. One trial found that a group of nearly 2500 patients with atopic eczema experienced significant reductions in skin redness, scaling, itching, chafing and thickening following cannabinoid cream treatments. Additionally, 38.3 percent of those patients experienced a complete resolution of itching4. Another study found that the twice-daily application of cream containing cannabinoids for three weeks completely eliminated skin itching in 38.1 percent of patients and significantly reduced the intensity of itching in 52.4 percent of patients16,17. In an animal trial, a topical containing the cannabinoid tetrahydrocannabinol (THC) effectively reduced skin inflammation in mice with dermatitis6. Another cannabinoid contained in cannabis, cannabidiol (CBD), was found to prevent skin inflammation and swelling9.

States That Have Approved Medical Marijuana for Eczema

So far, no states have approved medical marijuana for the treatment of eczema.

However, in Washington D.C., any condition recommended by DC-licensed physician can be approved for medical marijuana. California allows medical marijuana for “any debilitating illness where the medical use of marijuana has been deemed appropriate and has been recommended by a physician.’” Psoriasis patients in Massachusetts may be able to get legal access, as the state approves “other conditions as determined in writing by a qualifying patient’s physician.” In Oregon and Rhode Island, “other conditions are subject to approval.”

Recent Studies on Cannabis’ Effect on Eczema

    • Cannabinoid cream treatments significantly reduced skin redness, scaling, itching, chafing and thickening in patients with eczema.
      Adjuvant treatment of atopic eczema: assessment of an emollient containing N-palmitoylethanolamine (ATOPA study).
      (http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1468-3083.2007.02351.x/full)
    • Cannabinoid receptor agonists are effective at significantly reducing skin inflammation and itching.
      Histamine induced responses are attenuated by a cannabinoid receptor agonist in human skin.
      (http://link.springer.com/article/10.1007%2Fs00011-003-1162-z)
    • Topical cream containing cannabinoids completely eliminated itching in 38.1 percent of patients and significantly reduced the severity of itching in 52.4 percent of patients.
      Efficacy and tolerance of the cream containing structured physiological lipids with endocannabinoids in the treatment of uremic pruritus: a preliminary study.
      (http://www.ncbi.nlm.nih.gov/pubmed/16324422)

References:

  • February 22, 2017
  • Eve Ripley