Online Dermatologist > Pimples on the Scalp

Scalp Acne | What Can Cause Pimples | How Do Scalp Pimples Look and Feel | Scalp Breakouts Lead to Hair Loss? | Care Options for Scalp Pimples | Prevention | FAQs

Noticing sore or itchy bumps on your scalp and hairline can be frustrating and annoying, especially when they don’t go away or cause hair loss. Unlike a pimple on your face where you might quickly seek medical advice, you might often endure the pain from these frustrating bumps or breakouts on your scalp. However, their persistence can lead to hair loss and scalp infections. Therefore, scalp breakouts and bumps along your hairline are not something to simply disregard anymore. In this article, we will explore scalp pimples, including their development, causes, prevention methods, and when it’s time to seek medical attention.

Understanding Scalp Breakouts

Scalp breakouts, often referred to as pimples on your scalp or scalp acne, occur when you have breakouts on your scalp or hairline. These breakouts are the result of clogged pores or hair follicles. This clogging can be due to a combination of factors, primarily involving the overproduction of oil, buildup of dead skin cells, and the presence of bacteria within the pores. While similar to facial acne, scalp breakouts can be itchy or painful.

It’s important to understand that while they may resemble typical acne, these scalp breakouts can be caused by infection, inflammation, or product buildup. They might be due to several underlying causes such as blocked pores, scalp infections, or irritation from hair products. Sometimes, these bumps are subtle and felt rather than seen, while in other cases, numerous closely packed bumps are visible. When hair care products like shampoos, conditioners, and styling products are the cause, it’s medically known as acne cosmetica. Treatment options for these breakouts can range from simply changing your hair care routine or products to using medication to clear the acne.

What Can Cause Pimples or Bumps on the Scalp?

Our skin contains sebaceous glands, tiny oil-producing glands located near the surface, which are influenced by hormones. In individuals prone to acne, these glands can be particularly sensitive, leading to the production of too much oil (sebum). Simultaneously, the lining of the pores can thicken, causing dead skin cells to accumulate and block the pores. This mixture of sebum and dead skin cells plugging the pores results in blackheads and whiteheads. While harmless bacteria naturally live on everyone’s skin, the buildup of oil in clogged pores creates an ideal environment for these bacteria to multiply and trigger inflammation, leading to red, swollen, or pus-filled spots.

Specific Causes of Scalp Pimples

Product Buildup and Blocked Follicles: Hair care products such as oils, sprays, and gels can contribute to clogged pores and hair follicles. When these products are not thoroughly cleansed from the scalp, their residue, along with natural oils and dead skin cells, can accumulate and block the follicles. This can lead to a specific type of breakout called acne cosmetica, characterized by whiteheads and small, flesh-colored bumps, often appearing along the hairline, forehead, or back of the neck.

Folliculitis: This condition involves the inflammation or infection of hair follicles. Folliculitis can be caused by bacteria, fungi, or even physical factors like friction and sweat. It often presents as tender or pus-filled spots.

Acne Keloidalis Nuchae (AKN): AKN typically begins as small, firm bumps at the back of the scalp. If left untreated, this condition can progress to cause scarring and potentially permanent hair loss.

Hormonal or Stress-Related Breakouts: Fluctuating hormone levels can increase oil production, thereby raising the risk of blockages in hair follicles. An increase in androgens, which are male sex hormones, may lead to acne. Examples include hormonal changes during puberty, conditions like polycystic ovary syndrome (PCOS) which can lead to excess hormones, or stress-induced flare-ups. Certain medications, such as hormonal contraceptives, high-dose steroids, or anabolic steroids used by bodybuilders, can also cause or worsen acne.

Lifestyle Factors: Several lifestyle habits can increase the risk of scalp pimples.

• Friction: Frequent wearing of hats, helmets, or other headgear can create friction and trap sweat and oil, contributing to breakouts.
• Infrequent Washing: Not washing the scalp regularly, especially after sweating, can lead to the accumulation of sweat, oil, and dead skin cells.
• Environmental Irritants: Factors like high humidity and pollution can also exacerbate breakouts.
• Diet: While the direct link between specific diets and acne is still being studied, a healthy, well-balanced diet is generally advisable for overall skin health.
• Skin Picking: Squeezing or picking at existing blemishes can worsen acne and potentially lead to scarring.
• Stress

Sometimes, pimples on your scalp could also be a symptom of an underlying medical condition such as a pilar cyst, seborrheic dermatitis, or, rarely, squamous cell carcinoma or a reaction to certain medications. Your healthcare provider can help determine the specific cause of your scalp pimples to ensure appropriate treatment.

How Do Scalp Pimples Look and Feel?

Scalp pimples, or scalp acne, can manifest in various ways, ranging from mild to severe. Common signs include:

• Itchy red bumps
• White pus-filled pimples (pustules)
• Painful deep bumps or nodules
• Pimples on your scalp or hairline
• Pimples appear in a small group or cluster
• Scabbing, crusting, or hair thinning

While some bumps may look like typical facial acne, they can also present as pus-filled bumps with a white top (whiteheads), inflamed or swollen bumps (acne papules), or even pus-filled cysts deep within the skin (acne cysts). In severe cases, scalp acne can lead to complications such as scarring, which may appear as raised (hypertrophic or keloid) or indented (pitted or atrophic) marks, or discolored areas (red, hyperpigmented, or hypopigmented). If you notice anything unusual about the rash, it is advisable to consult a healthcare professional.

Can Scalp Breakouts Lead to Hair Loss?

Yes, scalp breakouts can lead to hair loss, particularly when they involve inflammation or repeated scratching, which can damage hair follicles. Certain conditions are more prone to causing hair loss:

• Scalp Infections: A scalp infection can result in scaly and inflamed areas on your scalp. You might notice what appear to be small black dots, which are actually hair stubs, and some individuals may develop bald spots. Fortunately, if the infection is treated, hair typically regrows once the infection clears.
• Acne Keloidalis Nuchae (AKN): This condition, if left untreated, can progress to scarring and permanent hair loss.
• Severe Folliculitis: Similar to AKN, severe cases of folliculitis, which is an inflammation or infection of hair follicles, can also lead to permanent hair loss if not addressed.

Once the infection clears, hair tends to regrow.

What Can Help? Care Options for Scalp Pimples

Treatment for scalp pimples varies depending on the cause of the clogged hair follicles and the severity of the condition. Approaches range from gentle home care to various medical interventions.

Gentle Scalp Care

For mild scalp acne, initial steps involve modifying your hair care routine and ensuring cleanliness. This includes,

• Regular Washing: Washing your scalp regularly with a mild or medicated shampoo, especially after sweating, can help prevent buildup.
• Avoiding Certain Products: It’s important to avoid hair care products that contain oils, are greasy, or leave heavy residue, as these can clog pores and worsen acne. Opt for products labeled “non-comedogenic” or “oil-free”.
• Not Picking or Scratching: Picking or scratching at scalp bumps can exacerbate inflammation, introduce bacteria, and potentially lead to scarring or worsen the condition.
• Maintaining Cleanliness of Headwear and Linens: To prevent reintroduction of product residue or bacteria, regularly wash items that come into contact with your scalp, such as pillowcases, sheets, caps, hats, headbands, and visors.
• Managing Headwear Use: When possible, avoid tight hats or helmets, and choose helmets with proper ventilation and a good fit.

Medical Options

If home care strategies are not effective, or if symptoms are persistent, moderate, or severe, medical treatments may be necessary. These treatments aim to address underlying factors like bacterial growth, inflammation, and hormonal imbalances.

Topical Treatments

These are often the first line of treatment for mild to moderate scalp acne and are applied directly to the skin. Active ingredients commonly found in over-the-counter or prescription topical treatments include:

• Benzoyl Peroxide: Helps to kill bacteria and reduce oil.
• Salicylic Acid: Aids in exfoliating dead skin cells and unclogging pores.
• Topical Antibiotics: Such as erythromycin, tetracycline, and clindamycin, used to clear bacteria from hair follicles and reduce inflammation.
• Topical Retinoids: Like tretinoin, isotretinoin, and adapalene, which help normalize cell turnover and prevent clogged pores.
• Azelaic Acid and Nicotinamide (Niacinamide): These can reduce inflammation and improve acne. Topical treatments should be applied to all affected areas, not just individual spots. It is often recommended to gradually introduce these treatments to prevent irritation.

Oral Medications

For more widespread, persistent, or severe scalp acne, oral medications may be prescribed.

• Oral Antibiotics: Medications like erythromycin or tetracyclines are used to clear bacteria from hair follicles and reduce inflammation. They are typically taken for several months, often alongside topical treatments, and should be used under medical supervision to avoid antibiotic resistance.
• Oral Contraceptive Pills: Combined oral contraceptive pills containing specific hormones (e.g., cyproterone acetate) can be beneficial for women whose acne is linked to hormonal imbalances, such as those with Polycystic Ovary Syndrome (PCOS). These carry a small risk of blood clots, and a doctor should be informed of any relevant medical history.
• Isotretinoin: This highly effective oral medication is typically reserved for severe, persistent acne that has not responded to other treatments. It is prescribed and monitored strictly by a dermatologist due to potential serious side effects, including dryness, initial worsening of acne, and specific risks regarding pregnancy. Patients capable of becoming pregnant must participate in a pregnancy prevention program due to the risk of birth defects. There have also been rare reports concerning mental health and sexual function, which should be discussed with the prescribing physician.
• Spironolactone: This medication, usually prescribed for heart conditions, can be used “off-license” in women with acne, particularly when hormonal factors are involved. It works by blocking the action of male hormones (androgens) that can contribute to acne.
• Oral Antihistamines: Can be used to reduce symptoms of itchiness.

Other Treatments

• Prescription Creams for Inflammation: Can be used to manage scalp inflammation.
• Light and Laser Therapy: Various forms of light and laser therapy exist for inflammatory acne, though their effectiveness can vary, especially for severe cases. Laser resurfacing is an established technique for reducing acne scarring but requires a skilled surgeon and is not typically performed within a year of isotretinoin treatment.
• Other Scar Treatments: Techniques like steroid injections, chemical peels, microneedling, and subcision may be used to improve the appearance of acne scars.
• Referral for Further Testing: If scalp breakouts are chronic or unusual, a referral for further testing may be necessary to identify underlying causes.

Always discuss the potential side effects of any medication with your healthcare provider and inform them of any other medications or supplements you are currently taking to avoid drug interactions.

What You Can Do to Prevent It

Preventing scalp pimples involves a combination of good hygiene practices, careful product selection, and attention to overall well-being. Taking early action to control breakouts can also help prevent permanent scarring.

Scalp Care and Hygiene

• Regular Washing: Wash your hair daily or when it becomes greasy, especially after activities that cause sweating, like exercise. This helps to remove excess oil, dead skin cells, and product residue that can clog hair follicles.
• Product Selection: Choose hair care products, including shampoos, conditioners, and styling aids, that are labeled “oil-free,” “non-comedogenic,” or “non-acnegenic.” These terms indicate that the products are less likely to clog pores and contribute to breakouts. Similarly, if using makeup, opt for non-comedogenic or non-acnegenic options.
• Gentle Cleansing: When washing your scalp and hair, use a gentle cleanser and water or an oil-free soap substitute. Avoid scrubbing too hard, as aggressive washing can irritate the skin and potentially worsen acne. Remember that blackheads are not caused by poor washing habits.
• Clean Headwear and Linens: Regularly wash any headwear, such as hats, caps, and headbands, as well as pillowcases. These items can accumulate product residue, oil, sweat, and bacteria that can transfer to your scalp and contribute to breakouts.

Lifestyle and Other Considerations

• Avoid Picking or Squeezing: Resist the urge to pick or squeeze scalp pimples. This action can aggravate the inflammation, introduce bacteria, increase the risk of infection, and lead to scarring.
• Manage Stress: While stress doesn’t directly cause acne, it can contribute to hormonal fluctuations that may worsen breakouts. Implementing stress management techniques can be beneficial for overall skin health.
• Balanced Diet: Maintaining a healthy, well-balanced diet is generally advisable for overall health, including skin health.
• Headwear Habits: When possible, avoid wearing tight hats or helmets for extended periods, especially those that lack ventilation, as they can create friction and trap sweat, contributing to clogged pores.

If scalp acne significantly impacts your self-confidence, causes distress, or leads to low moods, depression, or anxiety, it is crucial to seek support. Reach out to friends, family, or support groups. Inform your healthcare professional about your emotional well-being, as they can help develop a comprehensive treatment plan that may include support from mental health specialists like psychologists or psychiatrists, if necessary. Taking proactive steps to control acne as soon as it appears is key to preventing permanent scarring.

FAQs

What’s the difference between scalp acne and folliculitis?

Scalp acne refers to breakouts on the scalp or hairline that result from clogged pores or hair follicles, often due to oil and dead skin cell buildup. Folliculitis, on the other hand, is specifically the inflammation or infection of the hair follicles, which can be caused by bacteria, fungi, or friction. While scalp acne can include folliculitis as a type of breakout, folliculitis is a broader term for follicle inflammation from various causes.

Can poor hygiene cause bumps on the scalp?

While blackheads are not caused by poor washing, certain hygiene practices can increase the risk of scalp bumps. Not washing your hair daily or when it becomes greasy, especially after sweating, can lead to a buildup of sweat, oil, and dead skin cells that clog hair follicles. Similarly, not regularly washing headwear like hats or pillowcases, which can hold product residue or bacteria, can contribute to breakouts.

Can stress cause or worsen scalp pimples?

Yes, stress can be a contributing factor that may worsen scalp pimples. Fluctuating hormone levels, which can be influenced by stress, can lead to increased oil production, thereby raising the risk of blockages in hair follicles.

Medical Disclaimer:
This article is for informational purposes only and does not substitute professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with any questions you may have about a medical condition.