Alopecia areata is an autoimmune condition that causes smooth, round patches of hair loss on the scalp, face, or body. Ringworm of the scalp (tinea capitis) is a separate, contagious fungal infection that also produces bald patches, usually with scaling, itching, or broken hairs. The two conditions need different treatments, so a clinical exam and testing confirm which one is present before starting care.

# Alopecia Areata vs Ringworm: Causes, Symptoms, and Treatment

## What Is Alopecia Areata?

Alopecia areata is a non-scarring hair loss condition where the immune system attacks hair follicles. It typically appears as one or more smooth, well-defined bald patches on the scalp, though it can affect eyebrows, eyelashes, the beard, or other body hair. The course varies: some people regrow hair after a single episode, others have repeated flare-ups. Follicles stay alive during the condition, which is why regrowth is often possible.

- Scalp patches (most common presentation)
- Eyebrow and eyelash involvement
- Beard-area patches in men
- Alopecia totalis (full scalp loss) and alopecia universalis (full body hair loss) in severe cases

## How Is Ringworm Different From Alopecia Areata?

Ringworm of the scalp, or tinea capitis, is a fungal infection, not an autoimmune disease. It spreads through close contact or shared items such as combs, hats, or clippers. Ringworm patches usually show scaling, broken hairs, itching, or tenderness, and severe cases can cause inflamed, swollen lumps called kerion. Alopecia areata patches are typically smooth without scaling, sometimes with short "exclamation mark" hairs at the edges.

- Alopecia areata: smooth patches, no scaling, possible nail pitting
- Tinea capitis: scaly patches, broken hairs, itching, contagious
- Severe tinea capitis: kerion (inflamed lumps), swollen neck glands
- These clues guide diagnosis; a clinical exam and lab testing confirm it

## Who Develops Alopecia Areata?

Alopecia areata affects any gender and any age, including children. A personal or family history of autoimmune disease raises the risk. Severity ranges widely: some people lose a single small patch, while others develop alopecia totalis or alopecia universalis.

- Any age, including children
- Family history of autoimmune disease increases risk
- Mild cases: one or two small patches
- Severe cases: alopecia totalis or alopecia universalis

## What Causes Alopecia Areata?

The immune system mistakenly attacks hair follicles, disrupting the growth cycle and causing premature shedding. Genetics play a role and the condition tends to run in families. Flares can follow major stress, illness, hormonal changes, or certain medications, though a clear trigger is not always identified. Alopecia areata sometimes occurs alongside other autoimmune conditions.

- Autoimmune attack on hair follicles
- Genetic predisposition, runs in families
- Triggers: stress, illness, hormonal change, some medications
- Associated conditions: thyroid disease, vitiligo, type 1 diabetes, rheumatoid arthritis, eczema, asthma

## What Are the Symptoms of Alopecia Areata?

The most common sign is one or more round or oval bald patches that appear suddenly, sometimes within days to weeks. Short, broken hairs may be visible at the patch border. Some people notice nail changes such as pitting or ridging, along with mild itching or tingling in the affected area.

- Round or oval bald patches
- Sudden shedding over days to weeks
- Short broken hairs at patch edges
- Nail pitting, ridging, or roughness
- Mild itching, tingling, or burning

## How Do Doctors Diagnose Alopecia Areata?

Diagnosis starts with a scalp and skin exam, checking the patch edges and reviewing personal and family history. Dermatoscopy (trichoscopy) can reveal characteristic patterns without further testing. When the picture is unclear, doctors may add a hair pull test, fungal testing to rule out ringworm, blood tests for autoimmune conditions, or a small scalp biopsy.

- Scalp and skin exam
- Dermatoscopy (trichoscopy)
- Hair pull test
- Fungal testing to rule out tinea capitis
- Blood tests or scalp biopsy when needed

## What Are the Treatment Options for Alopecia Areata?

Treatment depends on age, how much hair is lost, how fast it appeared, and its impact on daily life. Limited patchy alopecia areata often improves without treatment, with regrowth starting within months. Dermatologists commonly use topical steroids, steroid injections, or short oral steroid courses to reduce inflammation. Topical minoxidil, topical immunotherapy, and other anti-inflammatory medicines are additional options. For severe or persistent cases, oral JAK inhibitors are approved in some countries and require specialist supervision.

- Monitoring for limited patchy hair loss
- Topical or injected corticosteroids
- Topical minoxidil or immunotherapy
- Oral JAK inhibitors for severe, persistent cases

## When Should You See a Doctor?

Book a clinical assessment for sudden patchy hair loss, especially with scalp scaling, pain, swelling, or itching that could indicate infection. Seek urgent care for rapidly spreading scalp inflammation, pus, fever, or painful swollen glands. Children with suspected scalp ringworm need prompt evaluation, since oral antifungal treatment prevents spread and reduces scarring risk.

- Sudden patchy hair loss with scaling or pain
- Rapidly spreading inflammation, pus, or fever
- Painful swollen glands
- Suspected ringworm in children (prompt antifungal treatment)

## Key Facts

- **Condition type:** Alopecia areata is autoimmune; tinea capitis is a fungal infection
- **Affected areas:** Scalp, eyebrows, eyelashes, beard, body hair
- **Common triggers:** Stress, illness, hormonal change, genetics, medications
- **Diagnosis methods:** Scalp exam, dermatoscopy, hair pull test, fungal culture, blood tests, biopsy
- **Treatment range:** Monitoring, topical or injected steroids, minoxidil, immunotherapy, JAK inhibitors for severe cases

## Frequently Asked Questions

### What exactly is alopecia areata?
An autoimmune condition that causes sudden, patchy, non-scarring hair loss on the scalp or body.

### What is ringworm?
A contagious fungal infection of the skin, hair, or nails. It is not caused by a worm.

### Can ringworm cause alopecia areata?
No. Ringworm causes fungal hair loss known as tinea capitis, a separate condition from autoimmune alopecia areata.

### What causes ringworm in the hair?
Dermatophyte fungi infect scalp hair and spread through contact with people, animals, or shared objects.

### What treats ringworm effectively?
Topical antifungals treat skin infections, while oral terbinafine or griseofulvin treats scalp ringworm (tinea capitis).

## Related Topics

- Emotional stress and its impact on hair loss
- Tinea capitis (scalp ringworm) treatment
- Hereditary pattern baldness
- Thyroid conditions and hair transplant eligibility
- Eczema, psoriasis, and hair loss
- Vitamin deficiency and hair shedding

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**Source / Clinic:** Hair Center of Turkey
**Last updated:** 2026-08-26