Understanding Folliculitis Decalvans: Causes & Symptoms

Introduction 

Waking up with an itchy, inflamed scalp can be extremely discomforting and irritating. When red bumps and hair loss follow, it becomes even more concerning.  
 
If your scalp irritation doesn’t go away and keeps worsening, you might be dealing with Folliculitis Decalvans—a rare condition that causes scarring and permanent hair loss. 

Many people confuse this with dandruff or a minor infection. However, it’s much more severe and needs medical attention. Understanding its causes and symptoms can help you take the right steps toward managing it. Let’s break it down. 

What is Folliculitis Decalvans? 

Folliculitis Decalvans is a long-term inflammatory condition that damages hair follicles, leading to scarring and irreversible hair loss. It progresses over time and can be difficult to treat. 

Key Signs to Watch For 

This condition affects both men and women but is more common in adults. Scientists believe bacteria, immune system dysfunction, and genetics play a role in its development.

What Causes Folliculitis Decalvans? 

There isn’t a single cause of this condition, but experts have identified several possible triggers. 

1. Bacterial Infections 

One of the biggest culprits is Staphylococcus aureus, a bacterium that can infect hair follicles. This triggers an excessive immune response, leading to chronic inflammation and follicle damage. 

2. Overactive Immune Response 

Some people’s immune systems overreact and attack their own hair follicles. This constant inflammation weakens the scalp and causes progressive hair loss. 

3. Genetic Influence 

Some studies suggest this condition may run in families. While not confirmed, a genetic link could explain why some people develop it while others don’t. 

4. Scalp Irritation and Hygiene 

Poor hygiene doesn’t cause this condition, but excessive oil, harsh hair products, or frequent irritation may worsen symptoms. Keeping your scalp clean and using mild hair products can help prevent flare-ups.

Is Folliculitis Decalvans Contagious? 

Many people worry about spreading this condition to others. However, it is not contagious. 

Even though bacteria contribute to its development, it doesn’t spread through direct contact, shared hair tools, or bedding. Unlike lice or fungal infections, this condition is linked to internal factors rather than external transmission. 

That said, maintaining scalp hygiene can help prevent further irritation and discomfort.

Recognizing the Symptoms: What to Look For? 

Catching this condition early can help prevent permanent hair loss. But how do you know if you have it? 

Symptoms You Shouldn't Ignore