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What causes dandruff on the scalp?
What causes dry skin dandruff?
What causes dandruff flakes?
What causes dandruff & eczema & seborrheic dermatitis?
Is dandruff harmful?
What are the symptoms of dandruff?
Dandruff causes white or grey flakes of skin to appear on the scalp and in the hair. The flakes are often more noticeable in darker hair and if they fall from your scalp onto your shoulders. Your scalp may also feel dry and itchy.
- Overview
- What is dandruff
- Symptoms
- How to get rid of dandruff
- Common dandruff shampoo brands
- What causes dandruff?
- Dandruff vs. dry scalp
- How to prevent dandruff
- When to see your doctor
- Takeaway
Dandruff can have many causes, including fungus and shampooing too often or not enough. Treatments like dandruff shampoo typically loosen flakes or target fungal overgrowth.
Dandruff is related to seborrheic dermatitis (SD), which causes itchy and flaky skin, but it only occurs on the scalp. It’s so common that it affects about half of the global adult population.
Most people focus on the flakes. Itching, on the other hand, may be the most uncomfortable side effect.
Flakes and an itchy, scaly scalp are the main symptoms of dandruff. White, oily flakes typically accumulate in your hair and on your shoulders and often get worse during the fall and winter months, when the air is dry.
Additional symptoms can include:
•erythema, which is red patches on the skin of the scalp, and sometimes on the face
•eyebrow dandruff
•hair loss
•dry flakes on the skin of the face
Treatment
The best way to get rid of dandruff is to use dandruff shampoo and scalp treatments. The American Academy of Dermatology Association (AAD) recommends taking the following steps: 1.Follow instructions. Since there are many different types of dandruff treatment shampoos, and each comes with its own instructions, it’s important that you carefully read and follow the directions of the product of your choice. Be sure you know if you’re supposed to leave the shampoo on your scalp for a certain amount of time before washing, or if you should wash out immediately. 2.Different skin and hair types require different care. African American people may only need to wash once a week with a dandruff shampoo. Asian American people and those who are white may need to alternate between different dandruff shampoos that contain different ingredients to achieve the best results. Your best course of action may be to speak with a board-certified dermatologist who can recommend the best products for your hair and skin type, and the frequency with which you should use them. Shampoos for dandruff can be medicated (which requires a prescription to purchase) or available over the counter. Usually, this means that the amount the medication in medicated shampoos is just higher. Typical ingredients include ketoconazole, selenium sulfide, coal tar, and zinc pyrithione. These ingredients usually loosen the dandruff flakes from the scalp or they fight the overgrowth of the Malassezia fungus, which may play a role in the development of the dandruff.
Some specific products you may see on the shelves include:
•Head & Shoulders and Jason Dandruff Relief contain zinc pyrithione, which is antibacterial and antifungal. Dandruff is not caused by fungus, but these shampoos can help to slow the production of excess skin cells.
•Neutrogena T/Gel is a tar-based shampoo. Coal can ease conditions from dandruff to psoriasis by slowing how quickly your scalp’s skin cells die and flake off. This type of shampoo can discolor hair, so be careful if you’re blonde or gray.
•Neutrogena T/Sal has a dose of salicylic acid and may lessen the amount of scale you have. It can leave your scalp dry, however. If you find that your scalp is particularly dry, make sure you follow up with a moisturizing conditioner.
•Selsun Blue has the power of selenium sulfide. It can slow your skin cells from dying and also reduce Malassezia. This type of shampoo may discolor lighter shades of hair.
•Nizoral is a ketoconazole shampoo, meaning it contains a broad-spectrum antifungal. You can find this type of wash over the counter or by prescription.
Many factors can contribute to the development of dandruff, so pinpointing the exact cause of your itchy, flaky scalp can be difficult. Here are a few likely culprits:
•secretions from your sebaceous glands
•fungal colonization on the surface of your skin
•not shampooing enough, which may cause skin cells to accumulate and create flakes and itching, or alternatively overshampooing and overdrying the scalp.
•Overbrushing the hair on the head, creating too much friction with the sensitive skin on the scalp
•yeast called Malassezia, which aggravates your scalp and causes excess skin cell growth
You may find it hard to tell the difference between dandruff and dry scalp, as they can both present similarly. Both can cause flakes and an itchy sensation on your scalp.
But while dandruff is related to seborrheic dermatitis, dry scalp is simply related to your skin losing too much water. This can happen when you’re not getting enough fluids.
But, it can also happen from some hair products that you might be using on your scalp that may be stripping your scalp of its natural oils. If you live in a cold and dry climate, you may also be more susceptible to having a dry scalp.
Treating a dry scalp usually involves switching to a gentle, unmedicated shampoo that contains as few additives as possible that may remove moisture from your scalp.
Here are some tips for things you can do to avoid dandruff:
•Practice good hygiene. Do your best to resist the urge to touch your scalp, especially if it’s already itchy. Scratching can increase irritation and lead to a vicious cycle. When you touch and scratch, you can also introduce dirt into the mix that can make dandruff worse.
•Find the right shampooing balance for your scalp. Shampoo often enough to keep oils at bay, but don’t use too many products in your hair as that can irritate the scalp.
•Reduce stress. Stress can aggravate or even worsen dandruff for some individuals. While Malassezia is not introduced to your scalp by stress, it can thrive if your immune system is compromised, which is exactly what stress does to your body. Do your scalp a favor and relax. Try taking a restorative walk or practicing yoga. You may even find it helpful to keep a log of stressful events. Write down what they are and how they impact your dandruff. That way, you can do your best to avoid potential triggers in the future.
•Breath fresh hair. Research shows that including regular exposure to the outdoors, especially where the air is more fresh, can help reduce oil buildup on the scalp.
•Massage your scalp. This may also help prevent dandruff symptoms.
The good news is that many cases of dandruff can be treated effectively with over-the-counter (OTC) shampoos and other lifestyle measures.
That being said, dandruff isn’t the only reason you may have an itchy scalp. If your dandruff is particularly stubborn or itchy, you may have psoriasis, eczema, or a true fungal infection. Your doctor can help.
If your itch isn’t letting up or your scalp becomes red or swollen, speak with your doctor. Check in as well if shampoos don’t help, redness and flaking spread to your face or other areas on the body, or the itching starts to interfere with your everyday life.
Sometimes the symptoms can indicate other, more serious, conditions such as Actinic keratoses (AKs) or Tinea capitis (scalp ringworm), and it’s best to be checked out to get the best treatment.
While dandruff can be annoying and embarrassing at times, it usually doesn’t indicate a more serious health issue. The itching and flaking often respond well to OTC shampoos and treatments. Keep trying different brands and types until you find something that works for you.
- Ashley Marcin
4 days ago · Seborrheic dermatitis is an inflammatory skin condition that can develop on the scalp, among other parts of the body, such as the ears, eyebrows, beard, nose, or chest. It causes dandruff that may be itchy and either dry or greasy. Seborrheic dermatitis also causes inflammation, which includes scalp swelling and skin discoloration.
Jan 8, 2021 · Dandruff is a condition in which dead skin cells on your scalp flake off, often landing on your shoulders and clothing. Although dandruff flakes may look alike, they can be caused by several...
Aug 25, 2023 · Causes. Dandruff may have several causes, including: Irritated, oily skin. Dry skin. A yeastlike fungus (malassezia) that feeds on oils on the scalps of most adults. Sensitivity to hair care products (contact dermatitis) Other skin conditions, such as psoriasis and eczema.
Jul 19, 2024 · Seborrheic (seb-o-REE-ik) dermatitis is a common skin condition that mainly affects your scalp. It causes scaly patches, inflamed skin and stubborn dandruff. It usually affects oily areas of the body, such as the face, sides of the nose, eyebrows, ears, eyelids and chest.
Sep 10, 2023 · Dandruff occurs when skin cells on the scalp regenerate more quickly than usual, causing dead skin cells to accumulate and flake off. Several factors can increase the turnover rate of...
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