What Causes Psoriasis Flare-Ups? 8 Common Triggers to Know
A psoriasis flare-up can feel like it appears overnight. One day your skin feels calm, and the next it becomes itchy, red, dry, flaky, or visibly irritated.
Psoriasis is a long-term immune-related skin condition, and flare-ups can be triggered by different factors such as stress, infections, skin injuries, smoking, alcohol, certain medicines, and weather changes. Not everyone has the same triggers, so understanding your personal pattern is an important part of managing uncomfortable skin days. (niams.nih.gov)
Here are 8 common psoriasis flare-up triggers to know — and how to support your skin when they happen.
1. Stress
Stress is one of the most commonly reported psoriasis triggers. When your body is under pressure, inflammation may increase, which can make psoriasis symptoms feel worse.
You may not be able to remove stress completely, but small habits can help:
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Take short walks
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Try deep breathing
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Sleep more consistently
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Journal your symptoms and mood
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Create a calming night routine
When stress affects your skin, it also helps to keep your skincare routine simple. A gentle, steroid-free topical product like HUNE Herbal Cream can be used as part of your daily routine to help soothe dry, itchy, flaky-looking skin during uncomfortable flare-up moments.
2. Scratching, Cuts, or Skin Injuries
Small skin injuries can sometimes trigger psoriasis patches in the same area. This may happen after a scratch, cut, scrape, bug bite, friction from clothing, or sunburn. AAD notes that some people may notice a flare near the injured area around 10 to 14 days after the skin injury. (Học viện Da liễu Hoa Kỳ)
To reduce irritation:
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Avoid scratching as much as possible
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Keep nails short
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Wear soft, breathable fabrics
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Treat small cuts gently
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Avoid rubbing the skin too hard after showering
If your skin feels rough, dry, or itchy, applying a thin layer of moisturizing, soothing cream may help reduce the urge to scratch.
3. Infections
Infections can also trigger psoriasis flare-ups. For some people, illnesses such as strep throat or other infections may make symptoms worse or cause new patches to appear. (niams.nih.gov)
If your flare-up happens after being sick, or if your skin is painful, swollen, hot, bleeding, or has pus, it is better to speak with a doctor instead of trying to manage it alone.
4. Cold, Dry Weather
Many people notice their psoriasis feels worse when the weather becomes cold or dry. Low humidity can make the skin lose moisture faster, leaving it tighter, rougher, and more uncomfortable.
To protect your skin:
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Use a humidifier if the air is very dry
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Keep showers short and lukewarm
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Apply moisturizer after bathing
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Avoid harsh soaps
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Reapply soothing cream when skin feels tight or flaky
This is where a daily comfort product like HUNE Herbal Cream can fit into your routine. It can be applied to dry, flaky-looking areas to help support moisture and skin comfort throughout the day.
5. Hot Showers and Harsh Skincare
Hot water, strong soaps, fragrance-heavy products, and aggressive scrubbing can make sensitive skin feel even drier and more irritated.
Try switching to:
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Lukewarm water
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Mild cleanser
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Fragrance-free or gentle skincare
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Soft towels
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Moisturizing products after showering
The goal is not to “strip” the skin, but to support the skin barrier. When the barrier feels compromised, dryness and itching can feel more intense.
6. Smoking
Smoking is another common trigger linked with psoriasis flare-ups. AAD and NHS both list smoking as a factor that may worsen psoriasis symptoms. (nhs.uk)
Quitting smoking is not easy, but reducing smoke exposure can support both skin health and overall health. If smoking is part of your lifestyle, consider speaking with a healthcare professional for support.
7. Alcohol
Frequent or excessive alcohol use may also trigger or worsen psoriasis in some people. AAD notes that drinking often or heavily may even make psoriasis treatment less effective for some individuals. (aad.org)
If you notice flare-ups after drinking, try tracking your symptoms for a few weeks. Your skin journal may help you see whether alcohol is one of your personal triggers.
8. Certain Medicines
Some medicines may trigger or worsen psoriasis symptoms in certain people. This does not mean you should stop taking medication on your own. If you think a medicine is affecting your skin, speak with your doctor first. (niams.nih.gov)
A dermatologist can help you understand whether your flare-up is linked to medication, stress, infection, or another factor.
Final Thoughts
Psoriasis flare-ups can be frustrating, especially when they seem to happen suddenly. But many flare-ups are connected to patterns: stress, dry weather, scratching, infections, alcohol, smoking, harsh skincare, or certain medicines.
The more you understand your triggers, the easier it becomes to build a routine that supports your skin.
Alongside medical advice when needed, gentle daily skincare can make a meaningful difference in skin comfort. For those looking for a botanical, steroid-free option, HUNE Herbal Cream can be added to a daily routine to help soothe dry, itchy, flaky-looking skin and support a calmer, more comfortable skin feel during flare-up moments.
