If you're currently taking valerian root and you notice that you've developed a rash, discontinue use of the herb and talk with your doctor. Any time you use a supplement, you are at risk of developing an allergic reaction. Any new substance can accidentally be mistaken by the immune system as dangerous and may trigger a reaction. Valerian root has been traditionally used to manage restlessness, insomnia, mental strain, anxiety, stress, menopause and a lack of concentration, according to Drugs.com. This herbal supplement has not been evaluated by the Food and Drug Administration and should only be used under a doctor's supervision.
Allergic Reaction
Rashes that form after using valerian root need to be reported to your doctor, because they are most likely a sign of an allergic reaction. MedlinePlus explains that any substance that your immune system doesn't identify as safe for the body can cause the release of immunoglobulin E antibodies, histamine and other chemicals. When this occurs, a chain reaction develops in the body that causes inflammation in your intestines, lungs, sinuses and skin. Skin inflammation from an allergic reaction can lead to the formation of a rash.
Contact Dermatitis
A common skin rash can form from direct contact with valerian root. Allergic contact dermatitis is skin irritation, redness, itching and swelling from touching the herb. This allergic skin reaction only develops in the localized area of the skin that has touched the substance and typically forms small blisters that are itchy. Treat this type of rash by washing the affected area with soap and water and applying hydrocortisone, as instructed by the American Academy of Allergy, Asthma and Immunology. This will reduce the swelling, redness and itchiness in a matter of minutes.
Eczema
If you've been diagnosed with eczema, an allergic reaction to valerian root can trigger an outbreak of this skin condition. Eczema typically appears on the arms, legs and face in the form of clusters of blisters that are red in color and full of liquid. The blisters commonly crack, weep and crust over, leaving the skin thick and leathery.
Hives
Hives may form anywhere on the body. This skin rash appears as welts that can form in different shapes and sizes and can move from one part of the body to another. Hives may also be an indication of a severe allergic reaction. Drugs.com states that valerian root has been reported to trigger anaphylaxis in some people. Anaphylaxis is a severe reaction that affects the entire body and may lead to death.
