About Tinea Capitis (Ringworm on Scalp)

Overview

Tinea capitis is a fungal infection that affects the scalp and hair follicles. It is caused by certain types of fungi called dermatophytes, which can infect the keratin, keratinized tissue, and hair. This condition is most commonly seen in children between the ages of 3 and 14, although it can affect people of all ages. Tinea capitis can present as single or multiple scaly patches of hair loss on the scalp, eyebrows, or eyelashes. In some cases, there may be black dots at the follicular openings, representing broken hairs. The infection can be either inflammatory or non-inflammatory, with the inflammatory type causing painful pus-filled nodules called kerion and potentially leading to scarring hair loss. Tinea capitis is highly contagious and can spread easily among family members and school children. Changes in hygiene habits, travel, and immigration have contributed to shifts in the prevalence of different causative fungi.

Causes and Risk Factors

Tinea capitis is a fungal infection of the scalp. The pathophysiologic causes of tinea capitis include:

Infection by dermatophytes, which are fungi that thrive on keratinized tissues like the scalp.
The fungus grows in the stratum corneum, hair shafts, and follicles of the scalp.
It invades the hair and causes brittleness and breakage.

Non-modifiable risk factors are factors that cannot be changed or controlled. The non-modifiable risk factors of tinea capitis are:

Age: Tinea capitis occurs almost exclusively in children and is very rare in adults.
Gender: It is more common in males.
Low socioeconomic status: This can contribute to overcrowding and increased risk of transmission.

Modifiable risk factors are factors that can be influenced or changed. The modifiable risk factors of tinea capitis include:

Poor hygiene practices: Lack of regular scalp washing and inadequate hair care can increase the risk.
Sharing personal items: Sharing combs, brushes, hats, or towels can facilitate fungal transmission.
Close contact with infected individuals: Being in close proximity to someone with tinea capitis increases the risk.
Warm and humid environments: These conditions create an optimal environment for fungal growth.
Keeping pets at home: Pets can carry and transmit the fungi.

It's important to note that these risk factors can vary depending on geographical location and individual circumstances. If you suspect tinea capitis, it is best to consult with a healthcare professional for an accurate diagnosis and appropriate treatment.

Symptoms

Tinea capitis can present with different symptoms depending on the stage and severity of the infection. Here are the most common early symptoms of tinea capitis:

Scaliness: The affected skin may develop scales that can be dry and flaky, resembling dandruff.
Itching: Itching is a common symptom of Tinea Capitis. It can range from mild to severe and can contribute to discomfort.
Scalp soreness or burning sensation: Some individuals may experience soreness or a burning sensation on their scalp.
Patchy hair loss: This is one of the initial signs of Tinea Capitis. The affected areas may have broken hairs and appear patchy.

As the infection progresses or becomes more severe, other common symptoms may occur:

Red and inflamed skin: The patches of skin affected by tinea capitis may become red and inflamed, especially near the edges.
Brittle hair: Hair in the affected areas may become brittle and break off easily.
Hair loss: In more severe cases, hair loss can occur in larger patches or even throughout the entire scalp.

It's important to remember that these symptoms can vary from person to person, and not everyone will experience all of them. If you suspect you have tinea capitis, it's best to consult with a healthcare professional for an accurate diagnosis and appropriate treatment.

Diagnosis

To diagnose tinea capitis, the following examinations, tests, and procedures are commonly performed:

History and physical exam: A detailed history will be taken about any symptoms or factors that could be contributing to your condition. A thorough exam of your scalp and skin will be performed to look for lesions that could be consistent with Tinea Capitis or other conditions.
Direct mycological examination: This involves taking a sample of the scalp hair and skin and examining it under a microscope to look for signs of fungal infection.
Culture: The collected samples are cultured on special agar plates to promote the growth of fungi. This helps identify the specific type of fungus causing the infection.
Trichoscopy: This is a newer diagnostic method that uses a special device called a dermoscope to examine the scalp and hair follicles. Trichoscopy can help differentiate between different types of fungal infections and monitor the response to treatment.

It's important to note that these diagnostic methods may vary in availability and usage in different healthcare settings. It is best to consult with a healthcare professional for an accurate diagnosis and appropriate management of tinea capitis.

Treatment Options

The goal of treatment for tinea capitis is to eliminate the fungal infection.

Recommended medication types for tinea capitis include:

Topical antifungal adjuncts: In some cases, topical antifungal creams or shampoos may be used alongside oral antifungal agents to limit the spread of infection or treat carriers.
Oral antifungal agents: Medications such as griseofulvin, terbinafine, itraconazole, and fluconazole are commonly prescribed to treat tinea capitis. These medications work by inhibiting the growth and reproduction of the fungus responsible for the infection.

Self-care and health behavior changes and other treatments recommended for tinea capitis include:

Good hygiene practices: Regularly washing and drying the scalp and hair can help prevent the recurrence of tinea capitis.
Avoiding sharing personal items: It is important to avoid sharing combs, brushes, hats, or other personal items that may spread the infection.
Treating close contacts: If someone in close contact with an infected individual shows symptoms of tinea capitis, they should also receive appropriate treatment.

It is important to note that specific treatment plans may vary depending on factors such as age, severity of infection, and individual response to medications. Consult with a healthcare professional for personalized advice.

Medication dosing may be affected by many factors. Check with your health care professional about dosing for your individual situation. Side effects can occur. Check with your health care professional or read the information provided with your medication for side effect information.