Trichomycosis: symptoms, photos, AI check 🚨 ICD-10: B35 | ICD-11: 1F2Z

Trichomycoses are a group of fungal diseases that affect hair and hair follicles. Most often, they involve the scalp or the beard area in men.

The main cause is infection by fungi capable of destroying the hair structure. This leads to hair fragility, hair loss, and areas of altered skin.

The condition can be contagious and may spread through contact with an infected person, animals, or shared objects. In most cases, trichomycoses respond well to treatment, especially when medical care is sought early.

What to do if suspected

If you notice areas of hair loss, scalp scaling, or inflamed patches, it is important not to delay diagnosis.

The first step is to consult a dermatologist. The doctor will examine the skin and hair and may order additional tests to confirm a fungal infection.

Additionally:

• report contact with animals or people with similar symptoms
• avoid using medicated shampoos or treatments before diagnosis
• avoid scratching or damaging the skin

Do not delay a medical visit. Without treatment, the infection may spread and in some cases lead to permanent hair loss.

How the condition looks

The appearance of trichomycosis varies depending on the form of the disease.

On the scalp, the most common signs include:

• round areas of thinning or hair loss
• skin scaling
• redness of varying intensity

Sometimes hairs in the affected area break off close to the skin surface, creating a “black dots” appearance or short broken stubs.

In more severe cases, inflamed painful areas with pustules may appear. These lesions can be swollen, firm, and sometimes discharge fluid.

In the beard area, possible signs include:

• inflamed nodules and pustules
• redness of the skin
• tenderness on touch

Symptoms vary widely between individuals — from mild scaling to severe inflammation.

Main symptoms

Symptoms depend on the form but most commonly include:

• hair loss or hair breakage
• areas of sparse or absent hair
• skin scaling
• redness
• sometimes itching

In inflammatory forms:

• pain
• pustules
• skin swelling

Causes

The main cause is infection by fungi that affect hair and skin.

Infection can occur:

• through contact with an infected person
• through contact with animals (especially cats, dogs, farm animals)
• via shared objects (combs, hats, towels)

Risk factors include:

• close contact in groups (e.g., children)
• skin damage
• weakened immune system
• increased skin moisture

How it develops

Fungi enter the skin and penetrate the hair follicle, the structure from which the hair grows.

They then destroy the hair structure, making it weak and prone to breaking. This results in patches of short broken hairs or complete hair loss.

The body reacts with inflammation. In mild cases it is minimal, while in more severe cases it may form painful lesions.

Severe inflammation can damage hair follicles, sometimes leading to permanent hair loss.

Forms and types

Trichomycoses can appear in different forms.

On the scalp:

• superficial form — scaling and mild hair loss
• inflammatory form — painful lesions with pustules
• “black dot” form — hair breaks at the skin level

In the beard area:

• inflammatory form — redness and pustules
• superficial form — mild changes
• ring-like lesions resembling other fungal infections

When to see a doctor

Consult a specialist if:

• hair loss patches appear
• scalp or facial skin is scaling and inflamed
• pain or pustules are present
• symptoms spread or worsen
• the condition recurs

It is especially important not to delay care in cases of strong inflammation to reduce the risk of permanent hair loss.

Treatment

Treatment aims to eliminate the fungus and restore healthy skin and hair.

A combined approach is usually used:

• systemic medications (oral) — the main treatment
• topical treatments — for mild or adjunct therapy

Additionally:

• maintain hygiene of skin and hair
• prevent spread of infection
• complete the full treatment course

Sometimes additional medications are used to reduce itching or inflammation.

Treatment is individualized by a physician and may take time.

Q&A

Can trichomycosis be cured?

Yes, in most cases the infection can be eliminated with proper treatment. Early therapy is important.

Are oral medications necessary?

Often yes, especially when the scalp or beard is affected, as fungi reside inside hair follicles.

Is it contagious?

Yes, some forms can spread through direct contact or shared items.

Can it be caught from animals?

Yes, this is a common source of infection, especially from infected pets or livestock.

Can hair loss become permanent?

In severe inflammation, hair follicles may be permanently damaged, so early treatment is essential.

Is hair cutting necessary?

Sometimes a doctor may recommend trimming hair to improve treatment effectiveness, but it is decided individually.

Is it dangerous?

Usually not, but it can progress and cause significant discomfort if untreated.

How long does treatment take?

It may take several weeks or longer depending on severity and form.

Check Your Skin Instantly

Use the Skin Scanner app – Skinive AI to take a photo of a skin lesion and get an AI-based risk assessment. It helps determine whether professional consultation is recommended, giving you fast guidance and peace of mind.

Medical sources

• World Health Organization (WHO) — Dermatophytosis
• Fitzpatrick’s Dermatology, 9th Edition
• European Academy of Dermatology and Venereology (EADV) Guidelines
• American Academy of Dermatology (AAD) — Scalp fungal infections
• Clinical Dermatology (Bolognia et al.)

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