Hair dermatology · São Mateus, Espírito Santo

Folliculitis decalvans explained

Folliculitis decalvans is a chronic scalp inflammation that may cause pustules, crusts, pain and scarring hair loss. Controlling activity can limit further loss.

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Educational illustration of the scalp and hair cycleAbstract representation of hair follicles used for patient education.hair cycleindividual assessmentEducational illustration; not a clinical diagnosis.
Educational representation. The cause of hair loss requires medical assessment.
Illustrative human image of foliculite decalvante; not a real patient.
Illustrative human image generated for educational use; not a real patient and not a diagnosis.

Dermatology care

Hair loss deserves diagnosis, not random trial and error

A classic sign may be several hairs emerging from one opening, called tufting or polytrichia. Activity can alternate with periods of remission.

  • Diagnosis combines examination and trichoscopy; culture and biopsy may be selected. Ringworm and other inflammatory alopecias may need exclusion.
  • A clear care plan with follow-up of symptoms and density.
  • Care for patients in São Mateus and the Northern Espírito Santo region.
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Important: this page is educational and does not replace a consultation, diagnosis or prescription.

Possible presentation

Signs that deserve attention

Possible signs

  • pustules and crusts
  • pain, burning or tenderness
  • tufting or polytrichia
  • progressive scarred patches

What may be involved

The condition involves neutrophilic inflammation and may include bacteria, biofilms and immune response. It should not be assumed to be a simple infection.

Appearance alone cannot confirm the type of alopecia. Pattern, timing and symptoms change the investigation.

Evaluation

How diagnosis is built

1

Medical history

Onset, speed, triggers, illness, medicines, styling habits and family history are reviewed.

2

Examination and trichoscopy

Diagnosis combines examination and trichoscopy; culture and biopsy may be selected. Ringworm and other inflammatory alopecias may need exclusion.

3

Individual plan

The type and activity of alopecia, together with general health, determine whether tests, biopsy, treatment or monitoring are appropriate.

Care

Treatment depends on the cause

Treatment is individualised and may include prescribed antibiotics, anti-inflammatory therapy, scalp care and other strategies. Resistance and adverse effects must be considered.

Address the origin

Correct or control an identifiable trigger whenever possible.

Protect follicles

Reduce inflammation, traction or progression to protect viable follicles.

Follow progress

Compare symptoms, photographs and density over time without promising the same result for everyone.

When to seek an earlier assessment

Recurrent pustules, crusts, discharge, pain, odour or expanding hairless areas require dermatology assessment soon.

FAQ · common questions

Questions about folliculitis decalvans

01Is folliculitis decalvans contagious?

It is not considered a contagious disease, although microorganisms may contribute to inflammation in some cases.

02Does hair return where there is scarring?

When the follicle has been destroyed, regrowth is unlikely; controlling activity protects viable areas.

03Can I take antibiotics on my own?

No. Choice and duration depend on diagnosis and resistance and side-effect risks.

04What is tufting?

It is when several hairs appear to emerge from one follicular opening, a possible sign of folliculitis decalvans.

05Are culture or biopsy always needed?

Not always, but they may help in atypical, resistant or diagnostically uncertain cases.

References

Information based on medical sources

  1. DermNet – Folliculitis decalvans
  2. Brazilian Society of Dermatology
  3. American Academy of Dermatology Association – Hair loss

Educational content reviewed for patient communication. It does not replace a medical consultation, diagnosis or prescription.