If you’re living, you’re living with stress. It’s built into the fabric of our lives, whether in the shape of work deadlines, relationship drama, illness, caregiving, or even a hard workout. All of these things exert pressures that can cause inflammation in our bodies that show up on our skin. For some of us, that can mean an outbreak of acne or even hives—those itchy raised welts that can appear anywhere on the body.
The connection between stress and skin problems isn’t a new concept. Research—including both systematic reviews and surveys, where people self-report symptoms—suggests psychological stress may play a role in chronic hives, officially known as chronic spontaneous urticaria (CSU). These hives are considered “chronic” because while many people experience occasional angry welts after exposure to a trigger (like trying a new laundry detergent, for example), CSU doesn’t clear within hours or days after the stressor is removed.
Chronic spontaneous urticaria (CSU) affects an estimated 1.6 million people in the U.S., particularly midlife women.
To better understand what’s happening in your body when stress makes it more sensitive to CSU, two top dermatologists explain the condition, the symptoms never to ignore, and the questions to ask your doctor—all of which may help lead to faster diagnosis, treatment, and much-needed relief.
The Difference Between CSU And Hives
Unlike a bout of hives that may dissipate within a day, a CSU flare lasts at least six weeks, with hives appearing on most days before disappearing as new welts emerge. “With CSU, each individual hive lasts 24 hours or less,” says Sylvia Hsu, MD, professor and chair of dermatology at the Lewis Katz School of Medicine at Temple University in Philadelphia. “People will say, ‘This was here this morning, now it’s gone,’ and tomorrow they’ll wake up with a different hive”—a pattern that can continue for months. Approximately 1.6 million people in the U.S. are thought to be affected by CSU, with women, especially those in midlife, more often experiencing the condition than men.
CSU is also idiopathic, meaning no one, not even your allergist or dermatologist, can say for sure why you’ve had a flare. According to Dr. Hsu, it likely comes down to your body’s unique immune response. Known triggers for hives include NSAIDs (non-steroidal anti-inflammatory drugs), certain blood pressure medications, infections, and exposure to heat or cold.
How Stress Triggers CSU And Other Conditions
Your skin is more than just a barrier. It’s the largest organ in your body, helping protect you from pathogens, toxins, environmental damage, and more. It also houses immune cells that promote skin health and act as a first line of defense against environmental antigens, according to research published in the International Journal of Molecular Science.
When those cells perceive a threat, real or imagined, they release excessive histamine and other chemicals to strike down an invader. In turn, blood vessels leak fluid into the surface of the skin. The itchy result is CSU’s hallmark symptom: pale red or white welts that come and go.
The brain plays a role, too. When the mind and/or body is bombarded by stress, the brain signals the adrenal glands to release cortisol. Your skin houses receptors for this potent stress hormone, which, when activated too often, can dysregulate the immune system, drive inflammation, impair wound healing, and lower resistance to infection. That can set the stage for a range of unwanted skin and other health issues.
Certain chronic skin conditions are especially sensitive to stress, says Lindsey Bordone, MD, a dermatologist with private practices in New York City and Scottsdale, AZ, who will be joining the University of Arizona’s department of dermatology this summer. And it’s not just CSU. Dr. Bordone says conditions such as alopecia (hair loss), eczema, and rosacea also share a strong skin-stress connection.
Is It CSU? And What To Do If It Is
Dr. Hsu says almost all of her patients suspect they have CSU by the time they seek treatment. After all, they’ve often been living with relentless itching and discomfort for weeks or months, with hives affecting their sleep and daily lives.
Yet, CSU’s symptoms can sometimes mimic other health disorders, including autoimmune conditions such as lupus or thyroid disease. And sometimes, “people show me pictures [of their symptoms] … not big red blotches, but tiny ones. They think they have folliculitis, and I have to explain, no, that’s a version of hives,” Dr. Bordone says.
That’s why it’s important to ask the right questions when speaking with your allergist or dermatologist. Dr. Bordone suggests discussing your family history of skin reactions and autoimmune disease, as well as any recent viral illnesses, since viruses are a common trigger for hives. If you’re prone to flare-ups, she also recommends mentioning any recent vaccinations, which she says “can sometimes irritate the immune system … and cause a temporary flare.”
If you’re diagnosed with CSU, you and your doctor can come up with a treatment plan. It may be as simple as taking an over-the-counter H1 antihistamine (such as Allegra, Claritin, or Zyrtec), or it may involve a more advanced treatment like a monthly biologic injection, which Dr. Hsu says is the latest treatment recommended for unresolved CSU. Knowing how to manage CSU can help reduce the stress caused by the condition itself, while also helping lessen the impact outside stress can have on your body.
Your CSU Stress Plan
If you’re prone to CSU or are battling a flare right now, “the biggest thing is to cut out alcohol,” advises Dr. Bordone, since alcohol stresses the body and “is a mast cell destabilizer” and activator, she says. Mast cells are first-responder immune cells that help the body deal with allergens and infections, which means alcohol may trigger them to release histamine, according to the Allergy & Asthma Network, a patient-centered advocacy group.
In addition to following your prescribed medication regimen and limiting happy hours, Dr. Bordone suggests cutting back on caffeine and being aware that even “aspirin can destabilize your mast cells.” If you’re trying to prevent a CSU flare, work to destress by prioritizing adequate sleep, getting regular exercise (but not overdoing it, she says), eating nutritious foods, and avoiding all-nighters.
“Living in a state of chronic stress can certainly make hives worse,” Dr. Bordone says. While no one knows exactly what triggers CSU, taking good care of yourself emotionally and physically can go a long way toward helping keep your skin calm.
