Seborrheic Dermatitis
Seborrheic dermatitis is a common, long-term rash that causes greasy flaking and inflammation where the skin is oiliest - the scalp, the eyebrows, the sides of the nose, the ears and the chest. Dandruff is its mildest form. It responds well to treatment and returns when treatment stops.
Key facts
Seborrheic Dermatitis at a glance.
Typical signs
Greasy flakes and inflammation
Common locations
Scalp, brows, nose folds, ears
Expected course
Recurring flares
Treatment options
Antifungals; short flare treatments
What is it?
Top things to know about Seborrheic Dermatitis
- It affects oil-rich areas. It produces scale and inflammation in sebaceous areas of the skin.
- Yeast plays a part. Malassezia normally lives on skin; an altered response to it contributes to disease.
- Dandruff is the mild end. Dandruff is a milder, scalp-only form of the same spectrum.
- Care depends on the site. A strong scalp treatment may not suit the eyes or facial folds.
What it looks like
What Seborrheic Dermatitis looks like
Seborrheic dermatitis causes red, flaky patches with greasy yellow or white scale. It shows up where oil glands are most active: the scalp, eyebrows, sides of the nose, behind the ears, the beard area and the center of the chest. It often itches and tends to flare with stress, cold weather and illness. In babies, it appears as thick yellow scale on the scalp, called cradle cap.
Seborrheic dermatitis is described by age and where it shows up.
Scalp seborrheic dermatitis
From mild dandruff to thick scale.
Facial seborrheic dermatitis
Nose folds, eyebrows and beard.
Cradle cap
Thick yellow scale on a baby's scalp.
Where it shows up
The scalp, eyebrows, sides of the nose and ears are common sites. The central chest can also be involved.
Face
Facial locations.
Hairline and temples
Areas at the front of the scalp.
Scalp and behind the ears
Locations on the back of the head.
Chest
Locations on the front of the upper trunk.
On different skin tones
Seborrheic Dermatitis on different skin tones
On lighter skin, seborrheic dermatitis looks pink or red with yellowish scale. On brown and Black skin, the patches may be lighter than the surrounding skin, sometimes with ring-shaped patterns along the hairline, and redness may be hard to see. Light patches usually return to normal color once the rash is controlled.
What happens in Seborrheic Dermatitis?
Malassezia yeast and the skin's response to it contribute to inflammation in oil-rich areas. Irritation and altered surface shedding produce patches with greasy scale.
- Yeast uses surface oils: Malassezia lives in oil-rich areas.
- Greasy scale builds up: Flakes collect on the affected surface.
- Sensitive skin becomes inflamed: The skin response contributes to irritation.
Causes and triggers
What causes Seborrheic Dermatitis
Causes
Why it happens
Seborrheic dermatitis is an inflammatory reaction to Malassezia yeast in oily areas of skin. The yeast is normal; the reaction to it is what differs.
It tends to run in families.
Risk factors
Raise the odds
- Parkinson's disease
- HIV
- Babies and adults aged 30 to 60
- Oily skin
Triggers
Bring it on or make it worse
- Stress (Strong link)
- Cold, dry weather (Strong link)
- Illness (Possible)
- Harsh soaps (Possible)
When it usually starts
When it usually starts
Seborrheic Dermatitis
Occurs in infancy as cradle cap and commonly recurs or begins in adult life.
Daily care
Daily care for Seborrheic Dermatitis
A plain moisturizer on the face
Use a plain moisturizer to reduce dryness, stinging and flaking.
Gentle washing, not aggressive washing
Mild cleanser, lukewarm water, no scrubs.
Use antifungal shampoo according to the label or prescription
Apply to the affected scalp and leave on for the contact time specified for that product before rinsing.
Use the prescribed facial or chest antifungal schedule
Frequency and maintenance use depend on the diagnosis and product; follow the agreed plan.
Seek assessment for widespread disease or immune suppression
Widespread disease needs a doctor.
Adjust skin care during winter and dry indoor conditions
The rash returns every year at the same time.
Avoid: Heavy oils, pomades and greasy products
The yeast feeds on their fats.
Avoid: Growing a beard
A new warm, oily area, often read as dry skin.
Avoid: Sweating under hats and helmets
Warmth and moisture suit it.
Avoid: Washing less often than the scalp needs
Oil and scale build up.
Avoid: Using only a moisturizer on the face
Nothing touches the yeast.
Avoid: Stress, poor sleep and being run down
A reliable trigger.
Avoid: Picking or scraping the scale off
More damage, more flaking.
Avoid: Scrubs, toners and acids on the face
They strip skin that is already inflamed.
Avoid: Stopping the medicated shampoo
The most common reason it comes back.
Treatments
Treatments for Seborrheic Dermatitis
Ketoconazole
The first thing to reach for, as a 1% shampoo used two or three times a week. It reduces the yeast, so the immune system has less to react to, and most people are clear in one to two weeks. It only works if it goes onto the skin and stays there five minutes — rinsing it straight out is the single most common reason people think it failed.
Hydrocortisone
A mild steroid cream that settles the stinging and redness on the face within a few days, which no antifungal does that quickly. Use it for a week or two to break a flare, not as the ongoing plan — the skin beside the nose and on the eyelids thins with repeated use. Something anti-yeast has to run underneath it.
Pyrithione Zinc
The active ingredient in most ordinary anti-dandruff shampoos, and a reasonable choice for scalp flaking without much inflammation. It is gentler and easier to use often than ketoconazole. If it has stopped helping, rotating to a different active ingredient usually works better than looking for something stronger.
Selenium Sulfide
Another shampoo that reduces the same yeast by a different route, useful when ketoconazole has lost its edge. It works well on a thickly scaling scalp. It has a strong smell and can discolor light, gray or chemically treated hair, so rinse thoroughly and keep it off the length where you can.
Salicylic Acid
A descaler for a scalp that has built up a thick crust. It loosens the scale so the antifungal underneath can actually reach the skin. It does nothing to the yeast or the inflammation, and on an already stinging face it is more likely to irritate than to help.
Coal Tar
An older shampoo that slows scaling and helps some people with a stubborn, thickly flaking scalp. It is more useful when psoriasis is in the picture too. It smells strong and can stain light hair, and there are gentler options with better evidence for this condition, so it is rarely where to start.
Tea Tree Oil
A 5% shampoo has been tested in dandruff with a modest result, and some people do find it helps. It is a common cause of allergic reactions on the face, so it is best kept to the scalp. Undiluted oil straight onto inflamed skin is a reliable way to make things worse.
Coconut Oil
The most popular home remedy for this, and one of the few that can genuinely backfire. Malassezia feeds on the fats in most plant oils, so oiling the scalp can hand it more of what it uses, and heavy oils also trap scale against the skin. Softening a crust before washing is the one job an oil does well here.
Ketoconazole
Ketoconazole 2% cream. The prescription strength, as a cream for the face, ears, beard area and chest, where a shampoo is impractical. Used daily it settles a facial flare in one to two weeks, then drops to twice a week to hold it. It treats the yeast and not the inflammation, so a sore, stinging face often needs something alongside it for the first week.
Zoryve
A once-daily non-steroid foam approved specifically for seborrheic dermatitis, and it works on the scalp and the face with the same product. It suits people who have been leaning on steroid creams on the face for a long time. Cost and insurance coverage are usually the deciding factor rather than the medicine.
Protopic
Calms the inflammation on the face without thinning the skin, which is what makes it useful around the nose creases and the eyebrows where steroids cannot be used for long. It stings or feels warm for the first few applications and then settles. It is often used twice a week to hold a face that keeps flaring.
Elidel
The gentler of the two non-steroid creams, and usually the better fit for thin, easily irritated facial skin. It works a little more slowly than tacrolimus and stings less. Like tacrolimus, its main job here is keeping a face clear without steroids.
Desonide
A mild prescription steroid for a face that is inflamed and sore, used for one to two weeks to break the flare. It is stronger than over-the-counter hydrocortisone and still gentle enough for facial skin. It is a short course, not a maintenance plan — long steroid use on the face causes its own rash.
Clobetasol
Clobetasol scalp solution. A strong steroid shampoo or solution, used on the scalp only, for a thickly scaling flare that an antifungal has not shifted. Two to four weeks at most. It is never for the face, and the antifungal has to keep running underneath it or the flare simply comes back when the steroid stops.
Itraconazole
Antifungal tablets, usually a short course, for seborrheic dermatitis that is severe, widespread, or has not responded to creams and shampoos used properly. They clear it faster than anything applied on the skin. It interacts with a long list of other medicines and needs a full list of what you take before it is started.
Fluconazole
A weekly antifungal tablet sometimes used for widespread or stubborn disease when itraconazole does not suit. The evidence for it in this condition is thinner. Either way, tablets clear a flare rather than change the condition, so the shampoo or cream still has to continue afterwards.
Accutane
A low dose shrinks the oil glands, and with less oil there is less for the yeast to feed on. It is reserved for severe disease that nothing else has controlled, because it dries the skin, lips and eyes and requires strict pregnancy prevention and monitoring. It is an unusual choice here, not a routine one.
Terbinafine
A common antifungal tablet that people are often given for this, and it is a poor match — it works well on the fungi behind athlete's foot and nail infections but has little effect on Malassezia. If a course of it has done nothing, that is expected rather than a sign the diagnosis was wrong.
Phototherapy
Narrowband UVB in a clinic, considered only for widespread disease on the body that has not responded to creams. It fits with the fact that most people improve in summer. It means several visits a week for weeks, which is a lot of effort for a condition that usually answers to a shampoo, so it is rarely used.
Outlook
What to expect with Seborrheic Dermatitis
Seborrheic dermatitis is chronic and it relapses. Almost every disappointment with treatment comes from expecting a cure. The infant version is the exception.
- 1
First months · 0-12 months
The infant version appears in the first weeks or months and may spread to the eyebrows and folds. It clears by around the first birthday in nearly every child, rarely needs more than gentle care, and does not predict the adult version.
- 2
Teens and twenties · Roughly 13-29
It begins in the teens or twenties and persists for decades, waxing and waning rather than coming in clean episodes.
- 3
Adulthood · 30 and up
Most people are worse in winter, better in summer, worse when stressed or run down. Some only ever have scalp flaking; others have the face and chest too, and the facial part bothers people most.
- 4
Living with it · Any adult age
Treatment usually works within one to two weeks and stops working just as quickly when it is stopped. Without maintenance, most people are back where they started within a few weeks to a couple of months. Once or twice a week permanently keeps it quiet. That is not treatment failure. It is how the condition behaves.
Complications
Complications to know about
Pale marks left behind
On deeper skin tones the rash commonly leaves flat pale patches, often ring-shaped or petal-shaped, along the hairline and on the face. For many people these are the real complaint, not the flaking. The color comes back — the inflammation interrupted pigment production rather than destroying it — but it can take several months, and treating the inflammation early is what shortens it.
Sore, crusted eyelid edges
Seborrheic dermatitis can settle on the rims of the eyelids, where it causes greasy crusting at the base of the lashes, redness along the edge, grittiness and morning stickiness. It is common and it is treatable, but face creams and shampoos are not safe this close to the eye. It needs its own plan, so mention it rather than treating it yourself.
Infection in scratched skin
Scratching or scraping the scale off breaks the skin, and bacteria can settle in the damage. The signs are golden-yellow crust, weeping, a hot sore area, or swollen glands in the neck. It is uncommon, and it clears with antibiotics, but it needs to be seen rather than treated with more shampoo.
When to get help
When to get help
When to seek care
Seek care when the diagnosis is uncertain, the rash is extensive or painful, or routine care does not control it.
Lookalikes
What else could it be?
Scalp Psoriasis
Scalp psoriasis usually has thicker, drier scale and a border you can trace. Seborrheic dermatitis has greasier scale and edges that fade into nearby skin.
Rosacea
Rosacea usually causes flushing and visible vessels without scale. Seborrheic dermatitis flakes, especially in the eyebrows and creases beside the nose.
Ringworm
Scalp ringworm can cause a round scaly patch with broken hairs or hair loss. Seborrheic dermatitis usually flakes without that distinct bald patch.
Questions
Questions you might be asking.
Is dandruff the same thing as seborrheic dermatitis?
The same process at different intensities. Dandruff is the mild end - flaking and itch with little visible inflammation. Seborrheic dermatitis is the fuller version, with inflamed, discolored skin and greasy scale, and it can involve the face, ears and chest too. The same treatments work for both, and many people move between them over the years.
Will it ever go away for good?
The infant version clears on its own, almost always within the first year. The adult version is long term. It is very treatable, and most people keep it more or less invisible with a once or twice weekly routine, but controlled is not cured. It fluctuates with season, stress and general health, so quiet spells are normal and not proof it has gone.
Does washing my hair more often help or make it worse?
For most people it helps, because washing removes the oil and scale the yeast uses. That does not suit every hair type, and frequent washing of textured or treated hair can do real damage. If two or three times a week is not realistic, ask for a leave-on antifungal foam, lotion or cream, or apply the shampoo to the scalp in sections without lathering the length. The plan should fit your hair.
Is the yeast an infection? Should I be worried about spreading it?
No, on both counts. Malassezia lives on the skin of essentially every adult as a normal resident. Seborrheic dermatitis is your immune system reacting to that normal resident, not an infection you caught, and nobody can catch it from you.
Can it cause hair loss?
It does not destroy hair follicles or cause permanent hair loss. Severe inflammation and persistent scratching can cause temporary shedding, which recovers once the scalp settles. Hair lost in a defined pattern, or a scarring scalp with smooth bald patches, is a different problem and worth having looked at.
Why does my face flake right where I use my skincare?
Because the creases beside the nose and the eyebrows are where seborrheic dermatitis lives, and it is easy to read that as your products drying you out. More moisturizer will not shift it, and acids and scrubs make it worse. The test is simple - an antifungal cream a few times a week there usually improves it within two weeks.
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