The Different Types of Scalp Folliculitis and Treatments

Dr. Sarah Mitchell, MD

Dr. Sarah Mitchell, MD

What is scalp folliculitis?

Scalp folliculitis is inflammation, and sometimes infection, of the hair follicles on the scalp. It may be superficial or deep depending on how much of the follicle is affected.

Severe forms may cause pain, scarring, or permanent hair loss. Seek medical advice for spreading infection, fever, deep painful nodules, or recurring symptoms.

Common Symptoms

  • Small red, white, or yellow bumps around hair follicles
  • Pus-filled blisters that may crust or scab
  • Itching, burning, or stinging on the scalp
  • Pain, swelling, or tenderness
  • Hair weakening or hair loss in severe cases
  • Fever or chills in rare spreading infections
Main Types of Folliculitis

Main Types of Folliculitis

Bacterial Folliculitis
  • The most common type. It is usually caused by bacteria entering the hair follicle through irritated or damaged skin.
Gram-Negative Folliculitis
  • This may happen after long-term antibiotic use, especially when treating acne. It occurs when resistant bacteria begin to grow.
Pseudomonas Folliculitis
  • Also called hot tub rash. It is linked to bacteria found in poorly maintained hot tubs or heated pools.
Malassezia Folliculitis
  • A yeast-related type that may worsen with oily skin, sweating, humidity, or heavy hair products.
Pseudofolliculitis
  • Often called razor bumps. It happens when shaved hairs curl back into the skin and cause inflammation.
Eosinophilic Folliculitis
  • A non-infectious type that causes very itchy, recurring bumps. It is more common in people with weakened immune systems.
Folliculitis Decalvans
  • A rare chronic type that can cause painful drainage and permanent scarring hair loss.
Dissecting Cellulitis of the Scalp
  • A severe inflammatory condition that can cause large pus-filled bumps, connected nodules, and patchy hair loss.
Folliculitis Keloidalis Nuchae
  • Usually affects the back of the neck and lower scalp. It may form thick, raised scars.

Main Causes

  • Bacteria such as Staphylococcus aureus
  • Yeast or fungal overgrowth
  • Ingrown hairs from shaving
  • Clogged follicles from oil, dead skin, or heavy products
  • Some medications that change the skin’s natural balance

Risk Factors

  • Tight hats, helmets, headbands, or hairstyles
  • Shaving the scalp
  • Using dull or unclean razors
  • Leaving sweat on the scalp after workouts
  • Heavy gels, oils, or pomades
  • Acne, dermatitis, diabetes, or weakened immunity
  • Thick or curly hair

Treatment Options

Treatment depends on what is causing the scalp folliculitis. Some cases are bacterial. Others may be caused by yeast, shaving irritation, clogged follicles, or deeper inflammation.

The goal is to:

  • Calm scalp irritation
  • Reduce bacteria or yeast when present
  • Keep follicles from becoming blocked
  • Support scalp healing
  • Help lower the chance of recurring flare-ups

Warm Compresses

Warm compresses may help mild bumps feel less painful.

  • Helps soothe tenderness
  • May help small bumps drain naturally
  • Can reduce pressure and discomfort
  • Best for mild irritation

Medicated Shampoos

Medicated shampoos may help when the scalp is oily, flaky, itchy, or yeast-prone.

  • Helps clean the scalp
  • May reduce yeast buildup
  • Can help with flakes and oil
  • Often used for Malassezia-related folliculitis

Topical Medications

Topical treatments are applied directly to the scalp.

  • Antibiotic gels may help bacterial cases
  • Antifungal creams may help yeast-related cases
  • Anti-inflammatory lotions may reduce redness
  • Best used when recommended by a healthcare provider

Oral Medications

More serious cases may need prescription medication.

  • Oral antibiotics may be used for bacterial infections
  • Oral antifungals may be used for yeast overgrowth
  • Anti-inflammatory medication may help chronic cases
  • Usually needed for widespread or recurring symptoms

Professional Drainage

Large or painful bumps should not be squeezed at home.

  • A dermatologist can drain large boils safely
  • This may reduce pain and pressure
  • It can lower the risk of scarring
  • It is best for deep, swollen, pus-filled bumps

Laser Hair Removal

Laser hair removal may help when folliculitis is caused by shaving or ingrown hairs.

  • Reduces hair growth in treated areas
  • May lower ingrown hair irritation
  • Can help with recurring razor bumps
  • Works best as a long-term prevention option

How Light Therapy Can Help

Light therapy uses specific wavelengths of light to support the scalp without harsh scrubbing, needles, or downtime.

It may be helpful as part of a regular scalp-care routine, especially for people dealing with recurring irritation.

Why People Use Light Therapy for Scalp Care

  • It is gentle and non-invasive
  • It does not require applying heavy products
  • It may help calm visible redness
  • It may support a healthier scalp environment
  • It can be used consistently at home
  • It may support follicle recovery over time

Red Light Therapy

Red light therapy is often used to support skin and scalp recovery.

  • May help calm scalp irritation
  • May support cellular repair
  • May help reduce visible redness
  • May support healthier-looking scalp tissue
  • Works best with consistent use

Blue Light Therapy

Blue light is often used in skincare routines for blemish-prone skin.

  • May help target surface bacteria
  • May support cleaner-feeling follicles
  • May help with inflamed-looking bumps
  • Can be useful for oily or breakout-prone scalps

Red + Blue Light Together

Red and blue light may work well together for irritated scalps.

  • Blue light supports a cleaner scalp environment
  • Red light supports calming and recovery
  • Together, they may help with redness and irritation
  • This combination is useful for ongoing scalp maintenance

Best For

  • Recurring scalp irritation
  • Folliculitis-prone scalps
  • Oily or sweaty scalps
  • People who want a gentle routine
  • People looking for non-invasive scalp support

What to Expect

  • Results are gradual
  • Consistency matters
  • It may take several weeks to notice improvement
  • It works best with good scalp hygiene
  • It should not replace medical care for severe cases
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