Psoriasis can cause hair loss, but usually only in specific ways
Yes, psoriasis can lead to hair loss, but the connection is not automatic. Most people with psoriasis keep their hair. Hair loss happens when psoriasis affects the scalp directly, when the condition triggers inflammation severe enough to damage hair follicles, or when the stress of living with psoriasis contributes to a separate hair-shedding condition. Understanding which mechanism is at work in your case matters because the treatment differs.
Scalp psoriasis itself does not always cause permanent hair loss. The plaques and inflammation can make hair feel brittle, break more easily, or shed temporarily while the skin underneath is inflamed. Once the psoriasis is treated and the scalp heals, hair typically regrows. But in cases where inflammation is severe or long-standing, the damage to hair follicles can be more lasting.
Key Takeaways
- Scalp psoriasis causes temporary hair shedding in most cases, with hair regrowing once the skin inflammation improves.
- Severe or untreated scalp psoriasis can damage hair follicles enough to cause longer-term hair loss that may not fully reverse.
- Psoriasis-related stress can trigger telogen effluvium, a separate condition where hair sheds across the scalp weeks or months after a stressful event.
- Treating the psoriasis itself—whether with topical steroids, biologics, or other therapies—is the most direct way to stop psoriasis-related hair loss.
How scalp psoriasis damages hair directly
When psoriasis plaques form on the scalp, they create thick, inflamed patches that can physically interfere with hair growth. The inflammation disrupts the hair follicle's normal cycle, pushing hairs prematurely into the shedding phase. This is why people with active scalp psoriasis often notice more hair in the shower or on their pillow.
The plaques themselves can also make hair brittle and prone to breaking. Scratching or picking at the plaques—which many people do because of itching—worsens this damage. The hair that breaks off or sheds during an active flare often regrows once the inflammation settles, usually within weeks to a few months after treatment begins.
However, if scalp psoriasis remains severe and untreated for a long time, the repeated inflammation can scar the hair follicles. Scarring alopecia, as it is called, can be permanent because scar tissue does not support new hair growth the way healthy skin does. This is why early treatment of scalp psoriasis matters—it prevents the condition from reaching that stage.
Psoriasis-related stress and telogen effluvium
A second pathway to hair loss involves stress. Living with a chronic condition like psoriasis creates ongoing physical and emotional stress, and stress can trigger a condition called telogen effluvium. In this condition, a large number of hair follicles shift into the shedding phase at the same time, usually weeks or months after the stressful event.
Telogen effluvium is not caused by psoriasis itself but by the body's response to the stress psoriasis creates. The hair loss is usually temporary and reversible—once the stress decreases and the body stabilizes, the hair regrows over several months. But it can feel alarming because the shedding is often noticeable across the whole scalp, not just in the areas with psoriasis plaques.
This type of hair loss is separate from the direct damage psoriasis plaques cause. Someone can have mild scalp psoriasis but significant telogen effluvium if they are under considerable stress, or vice versa. Recognizing the difference helps determine whether the focus should be on treating the psoriasis, managing stress, or both.
Treatments that address psoriasis-related hair loss
The most effective approach is treating the psoriasis itself. Topical corticosteroids applied directly to scalp plaques reduce inflammation and often stop the hair shedding within weeks. For people with moderate to severe scalp psoriasis, dermatologists may prescribe systemic treatments—medications that work throughout the body—such as biologics (drugs that target specific immune pathways) or other systemic therapies.
Biologic medications like TNF inhibitors or interleukin inhibitors can be particularly effective for scalp psoriasis because they address the underlying immune dysfunction. Many people see improvement in both skin plaques and hair loss once a biologic begins working, though this typically takes 8 to 12 weeks.
For telogen effluvium triggered by psoriasis-related stress, treatment focuses on stress reduction and general health. Adequate sleep, exercise, and stress management techniques can help. In some cases, a dermatologist may recommend iron or zinc supplementation if deficiencies are present, though this is less common. The hair usually regrows on its own once the stress response resolves.
What to avoid when you have scalp psoriasis
Certain habits can worsen hair loss in people with scalp psoriasis. Scratching or picking at plaques damages hair follicles and can introduce infection. Harsh shampoos, frequent blow-drying on high heat, and tight hairstyles that pull on the scalp all increase breakage and shedding when the scalp is already inflamed.
Some people try to treat scalp psoriasis with over-the-counter products that contain salicylic acid or coal tar. While these can help reduce plaques, they can also dry out the scalp further and make hair more brittle. A dermatologist can recommend products that treat the psoriasis without worsening hair quality.
Stopping psoriasis treatment abruptly can also trigger a rebound flare—a sudden worsening of the condition—which can accelerate hair loss. If a treatment is not working or causing side effects, talk with your dermatologist about switching rather than stopping.
When hair loss from psoriasis is reversible
Most hair loss related to active scalp psoriasis is reversible. Once the inflammation improves—whether through topical treatment, systemic medication, or both—the hair follicles return to their normal cycle and regrowth begins. This process is not immediate; it typically takes 3 to 6 months to see noticeable regrowth because that is how long the hair growth cycle takes.
Telogen effluvium is also reversible. The shedding phase lasts about 2 to 3 months, and then regrowth begins. Again, full recovery takes several months because hair grows slowly.
The exception is scarring alopecia, which occurs only when inflammation has been severe and long-standing enough to damage the follicle permanently. This is rare in psoriasis but more likely if the condition has been untreated for years. Even in these cases, newer treatments and hair restoration techniques may help, so discussing options with a dermatologist is worthwhile.
When to see a dermatologist about hair loss and psoriasis
If you have psoriasis and notice increased hair shedding, schedule an appointment with your dermatologist. Bring information about when the hair loss started, whether it is concentrated on areas with psoriasis plaques or spread across the scalp, and any changes in your stress level or overall health. This information helps your dermatologist determine whether the hair loss is directly from psoriasis, from stress, or from another cause.
If you have scalp psoriasis that is not responding to your current treatment, mention the hair loss specifically. It may signal that the psoriasis needs a stronger or different medication. If your psoriasis is well-controlled but you are still losing hair, your dermatologist can evaluate whether telogen effluvium or another condition is responsible.
Frequently Asked Questions
Does all scalp psoriasis cause hair loss?
No. Mild scalp psoriasis often causes no noticeable hair loss. Hair shedding is more common when psoriasis is moderate to severe, when plaques cover a large area, or when the condition is not being treated. Even then, the hair loss is usually temporary.
Will my hair grow back after psoriasis treatment?
In most cases, yes. Hair regrows once the scalp inflammation improves, though it takes 3 to 6 months because that is the normal hair growth cycle. Telogen effluvium hair also regrows, typically over 3 to 6 months after the shedding phase ends. Only in cases of scarring alopecia—rare in psoriasis—is the loss potentially permanent.
Can I use regular shampoo if I have scalp psoriasis and hair loss?
Regular shampoo is usually fine, but avoid products with harsh sulfates or high alcohol content, which can dry the scalp further. Some dermatologists recommend medicated shampoos containing salicylic acid or coal tar, though these should be used as directed. Ask your dermatologist which products are safe to use alongside your psoriasis treatment.
Is the hair loss from psoriasis permanent?
Hair loss from active scalp psoriasis is usually temporary and reverses once the inflammation is treated. Hair loss from stress-related telogen effluvium is also temporary. Only scarring alopecia, which develops after severe long-term inflammation, can be permanent—and this is uncommon in psoriasis.
Can biologics help with psoriasis-related hair loss?
Yes. Biologics that treat psoriasis often improve scalp psoriasis and reduce associated hair loss. They work by targeting the immune pathways driving inflammation. Results typically appear over 8 to 12 weeks. If hair loss is from stress-related telogen effluvium rather than active psoriasis, biologics may help indirectly by improving the psoriasis and reducing overall stress.