ICD-10: B35

Dermatophytosis

Clinical Information

Includes

  • tinea, any type except those in B36.-
  • favus
  • infections due to species of Epidermophyton, Micro-sporum and Trichophyton

Additional Information

Approximate Synonyms

Dermatophytosis, classified under ICD-10 code B35, refers to a group of fungal infections affecting the skin, hair, and nails. This condition is commonly caused by dermatophytes, which are a type of fungi that thrive on keratin, a protein found in these tissues. Below are alternative names and related terms associated with ICD-10 code B35.

Alternative Names for Dermatophytosis

  1. Tinea: This is a general term often used interchangeably with dermatophytosis. It is typically followed by a specific location to indicate the affected area, such as:
    - Tinea pedis: Athlete's foot, affecting the feet.
    - Tinea corporis: Ringworm, affecting the body.
    - Tinea capitis: Scalp ringworm, affecting the scalp.
    - Tinea cruris: Jock itch, affecting the groin area.
    - Tinea unguium: Onychomycosis, affecting the nails.

  2. Fungal Skin Infection: A broader term that encompasses various fungal infections of the skin, including dermatophytosis.

  3. Ringworm: A common name for dermatophytosis, particularly when it manifests as a circular, red, itchy rash.

  4. Dermatophyte Infection: This term emphasizes the causative agents (dermatophytes) responsible for the infection.

  1. Fungal Infection: A general term that includes all types of infections caused by fungi, not limited to dermatophytes.

  2. Mycosis: A broader medical term for any fungal infection, which can include dermatophytosis as well as other types of fungal infections.

  3. Superficial Fungal Infection: This term refers to infections that affect the outer layers of the skin, hair, and nails, which includes dermatophytosis.

  4. Cutaneous Fungal Infection: Similar to superficial fungal infections, this term specifically refers to fungal infections of the skin.

  5. Tinea Versicolor: Although not a dermatophyte infection, this condition is often confused with dermatophytosis. It is caused by a different type of fungus (Malassezia) and results in discolored patches on the skin.

Conclusion

Understanding the alternative names and related terms for ICD-10 code B35: Dermatophytosis is essential for accurate diagnosis and treatment. These terms help healthcare professionals communicate effectively about the condition and ensure that patients receive appropriate care. If you have further questions about dermatophytosis or related conditions, feel free to ask!

Diagnostic Criteria

Dermatophytosis, commonly known as a fungal infection of the skin, is classified under the ICD-10-CM code B35. This category encompasses various types of dermatophyte infections, including tinea corporis (ringworm), tinea pedis (athlete's foot), and tinea unguium (nail fungus). The diagnosis of dermatophytosis involves several criteria, which can be categorized into clinical evaluation, laboratory testing, and patient history.

Clinical Evaluation

  1. Symptoms and Signs:
    - Patients typically present with symptoms such as itching, redness, and scaling of the skin. The appearance of the lesions can vary depending on the type of dermatophytosis. For instance, tinea corporis often presents as circular, red patches with raised edges, while tinea pedis may show scaling and fissures between the toes[1][2].

  2. Physical Examination:
    - A thorough physical examination is crucial. The clinician will look for characteristic lesions on the skin, nails, and scalp. The distribution and morphology of the lesions can provide significant clues to the diagnosis[3].

Laboratory Testing

  1. KOH Preparation:
    - A potassium hydroxide (KOH) preparation of skin scrapings can be performed. This involves taking a sample from the affected area and treating it with KOH to clear the skin debris, allowing for the visualization of fungal elements under a microscope. The presence of hyphae or spores confirms a dermatophyte infection[4].

  2. Fungal Culture:
    - Culturing the sample on specific media can help identify the causative organism. This method is more time-consuming but can provide definitive identification of the dermatophyte species[5].

  3. Wood's Lamp Examination:
    - In some cases, a Wood's lamp may be used to examine the skin. Certain dermatophytes fluoresce under ultraviolet light, aiding in diagnosis[6].

Patient History

  1. Exposure History:
    - A detailed patient history is essential. Clinicians will inquire about recent exposure to infected individuals, pets, or environments (such as locker rooms or swimming pools) that may facilitate transmission of dermatophytes[7].

  2. Previous Infections:
    - A history of recurrent fungal infections can also be a significant factor in diagnosis. Patients with a history of tinea infections may be more susceptible to future occurrences[8].

  3. Underlying Conditions:
    - The presence of underlying conditions such as diabetes, immunosuppression, or other skin disorders can predispose individuals to dermatophytosis, influencing both diagnosis and treatment strategies[9].

Conclusion

The diagnosis of dermatophytosis (ICD-10 code B35) relies on a combination of clinical evaluation, laboratory testing, and patient history. Accurate diagnosis is crucial for effective treatment and management of the infection. Clinicians must consider all these factors to differentiate dermatophytosis from other skin conditions and to determine the appropriate therapeutic approach. If you suspect a dermatophyte infection, consulting a healthcare professional for a thorough evaluation is recommended.

Treatment Guidelines

Dermatophytosis, classified under ICD-10 code B35, refers to a group of fungal infections caused by dermatophytes, which are fungi that thrive on keratin found in skin, hair, and nails. The most common types of dermatophytosis include tinea pedis (athlete's foot), tinea corporis (ringworm), tinea cruris (jock itch), and tinea capitis (scalp ringworm). Treatment approaches for dermatophytosis typically involve antifungal medications, both topical and systemic, depending on the severity and location of the infection.

Standard Treatment Approaches

1. Topical Antifungal Agents

For localized infections, topical antifungal treatments are often the first line of defense. Commonly used agents include:

  • Clotrimazole: An imidazole antifungal that disrupts fungal cell membrane synthesis.
  • Miconazole: Another imidazole that is effective against a variety of dermatophytes.
  • Terbinafine: An allylamine antifungal that is particularly effective for tinea pedis and tinea corporis.
  • Ketoconazole: A broad-spectrum antifungal that can be used for various dermatophyte infections.

These medications are typically applied directly to the affected area for a duration of 2 to 4 weeks, depending on the specific infection and its severity[1][2].

2. Systemic Antifungal Therapy

In cases of extensive infections, infections involving the nails (onychomycosis), or when topical treatments fail, systemic antifungal medications may be necessary. Common systemic treatments include:

  • Terbinafine: Often prescribed for tinea capitis and onychomycosis, it is taken orally for several weeks.
  • Itraconazole: Another oral antifungal that is effective for various dermatophyte infections, particularly tinea capitis.
  • Fluconazole: Sometimes used for dermatophyte infections, especially in cases of tinea capitis in children.

The choice of systemic antifungal depends on the specific type of dermatophytosis, patient health status, and potential drug interactions[3][4].

3. Adjunctive Measures

In addition to antifungal medications, several adjunctive measures can help manage dermatophytosis:

  • Hygiene Practices: Keeping the affected area clean and dry is crucial, as dermatophytes thrive in moist environments. Regular washing and thorough drying can help prevent the spread and recurrence of infection.
  • Avoiding Irritants: Patients should avoid tight clothing and synthetic materials that can trap moisture and heat, creating an environment conducive to fungal growth.
  • Use of Antifungal Powders: For areas prone to moisture, such as the feet or groin, antifungal powders can help keep the area dry and reduce friction.

4. Monitoring and Follow-Up

Regular follow-up is essential to ensure the effectiveness of the treatment and to monitor for any potential side effects, especially with systemic antifungals. If symptoms persist or worsen, further evaluation may be necessary to confirm the diagnosis and rule out other conditions[5][6].

Conclusion

The treatment of dermatophytosis (ICD-10 code B35) primarily involves the use of topical and systemic antifungal agents, tailored to the specific type and severity of the infection. Maintaining good hygiene and following up with healthcare providers are critical components of effective management. If you suspect a dermatophyte infection, consulting a healthcare professional for an accurate diagnosis and appropriate treatment plan is essential.

Description

Dermatophytosis, classified under ICD-10 code B35, refers to a group of fungal infections caused by dermatophytes, which are fungi that thrive on keratin found in skin, hair, and nails. This condition is commonly known as "ringworm," although it can affect various parts of the body and is not caused by a worm. Below is a detailed clinical description and relevant information regarding this diagnosis.

Overview of Dermatophytosis

Definition

Dermatophytosis is an infection of the skin, hair, or nails caused by dermatophytes, which include three main genera: Trichophyton, Microsporum, and Epidermophyton. These fungi can invade the keratinized tissues, leading to various clinical manifestations depending on the site of infection.

Etiology

The primary causative agents of dermatophytosis are:
- Trichophyton species (e.g., T. rubrum, T. mentagrophytes)
- Microsporum species (e.g., M. canis)
- Epidermophyton species (e.g., E. floccosum)

These fungi are typically transmitted through direct contact with infected individuals, animals, or contaminated surfaces, such as floors and towels.

Clinical Manifestations

Types of Dermatophytosis

Dermatophytosis can manifest in several forms, depending on the area affected:

  1. Tinea Pedis (Athlete's Foot): Affects the feet, often presenting with itching, burning, and peeling skin, particularly between the toes.
  2. Tinea Corporis (Body Ringworm): Characterized by circular, red, itchy patches on the body, often with raised edges.
  3. Tinea Cruris (Jock Itch): Affects the groin area, leading to red, itchy rashes.
  4. Tinea Capitis (Scalp Ringworm): Involves the scalp, causing hair loss and scaly patches.
  5. Tinea Unguium (Onychomycosis): Affects the nails, leading to discoloration, thickening, and potential nail loss.

Symptoms

Common symptoms associated with dermatophytosis include:
- Itching and irritation
- Red, scaly patches
- Blisters or pustules in some cases
- Hair loss in cases affecting the scalp
- Nail discoloration and thickening

Diagnosis

Clinical Examination

Diagnosis is primarily based on clinical examination and patient history. The characteristic appearance of the lesions often provides sufficient evidence for diagnosis.

Laboratory Tests

  • KOH Preparation: A skin scraping can be treated with potassium hydroxide (KOH) to visualize fungal elements under a microscope.
  • Fungal Culture: Culturing the suspected dermatophyte can confirm the diagnosis and identify the specific species.

Treatment

Antifungal Medications

Treatment typically involves topical or systemic antifungal agents, depending on the severity and location of the infection:
- Topical Antifungals: Such as clotrimazole, miconazole, or terbinafine for localized infections.
- Oral Antifungals: Such as griseofulvin or itraconazole for extensive or resistant cases, particularly for tinea capitis and tinea unguium.

Prevention

Preventive measures include maintaining good hygiene, keeping skin dry, avoiding sharing personal items, and using antifungal powders in susceptible areas.

Conclusion

ICD-10 code B35 encompasses various forms of dermatophytosis, each with distinct clinical features and treatment protocols. Understanding the etiology, symptoms, and management of this condition is crucial for effective diagnosis and treatment. Proper identification and timely intervention can significantly improve patient outcomes and prevent complications associated with dermatophytosis.

Clinical Information

Dermatophytosis, classified under ICD-10 code B35, refers to a group of fungal infections caused by dermatophytes, which are fungi that thrive on keratin found in skin, hair, and nails. This condition can manifest in various forms, depending on the site of infection and the specific dermatophyte involved. Below is a detailed overview of the clinical presentation, signs, symptoms, and patient characteristics associated with dermatophytosis.

Clinical Presentation

Dermatophytosis can present in several forms, each characterized by specific clinical features:

1. Tinea Capitis (Scalp Infection)

  • Signs and Symptoms:
  • Scaly patches on the scalp, often with hair loss.
  • Itching and inflammation.
  • Kerion formation (a painful, swollen area).
  • Possible presence of black dots (broken hair shafts).
  • Patient Characteristics: More common in children, particularly those aged 3 to 14 years, and can be transmitted in communal settings like schools.

2. Tinea Corporis (Body Infection)

  • Signs and Symptoms:
  • Round, red, scaly patches with raised edges.
  • Central clearing, giving a ring-like appearance (often referred to as "ringworm").
  • Itching and discomfort.
  • Patient Characteristics: Can affect individuals of any age, often seen in those with close contact sports or in warm, humid environments.

3. Tinea Pedis (Athlete's Foot)

  • Signs and Symptoms:
  • Itching, burning, and stinging between the toes or on the soles of the feet.
  • Peeling, cracking, or blistering skin.
  • Foul odor may be present.
  • Patient Characteristics: Common in adults, particularly those who wear tight shoes or have sweaty feet.

4. Tinea Manuum (Hand Infection)

  • Signs and Symptoms:
  • Red, scaly patches on the palms or between fingers.
  • Itching and dryness.
  • Patient Characteristics: Often occurs in individuals who frequently handle infected animals or contaminated materials.

5. Tinea Unguium (Nail Infection)

  • Signs and Symptoms:
  • Thickened, discolored nails that may crumble.
  • Separation of the nail from the nail bed.
  • Patient Characteristics: More prevalent in older adults and those with diabetes or compromised immune systems.

Signs and Symptoms Overview

The common signs and symptoms of dermatophytosis include:

  • Itching: A hallmark symptom across all types of dermatophytosis.
  • Redness and Inflammation: Affected areas often appear red and swollen.
  • Scaling and Peeling: Skin may become scaly, especially in tinea pedis and tinea corporis.
  • Hair Loss: Particularly in tinea capitis, where hair may break off at the scalp.
  • Nail Changes: In tinea unguium, nails may become discolored, thickened, and brittle.

Patient Characteristics

Certain patient characteristics can predispose individuals to dermatophytosis:

  • Age: Children are more susceptible to tinea capitis, while adults are more commonly affected by tinea pedis and tinea unguium.
  • Immune Status: Individuals with weakened immune systems (e.g., due to HIV/AIDS, diabetes, or immunosuppressive therapy) are at higher risk.
  • Environmental Factors: Warm, humid climates and communal living situations (e.g., dormitories, gyms) facilitate the spread of dermatophytes.
  • Personal Hygiene: Poor hygiene practices can increase the risk of infection, particularly in tinea pedis.

Conclusion

Dermatophytosis encompasses a range of fungal infections that can affect various body parts, each with distinct clinical presentations and symptoms. Understanding the signs, symptoms, and patient characteristics associated with this condition is crucial for effective diagnosis and treatment. Early recognition and appropriate antifungal therapy can help manage the infection and prevent its spread, particularly in communal settings where transmission is more likely.

Related Information

Approximate Synonyms

  • Tinea
  • Fungal Skin Infection
  • Ringworm
  • Dermatophyte Infection
  • Mycosis
  • Superficial Fungal Infection
  • Cutaneous Fungal Infection

Diagnostic Criteria

  • Itching, redness, scaling of the skin
  • Characteristic lesions on skin, nails, scalp
  • Presence of hyphae or spores under microscope
  • Fungal elements visible after KOH preparation
  • Fluorescence under Wood's lamp examination
  • Recent exposure to infected individuals or environments
  • History of recurrent fungal infections

Treatment Guidelines

  • Apply topical antifungal cream
  • Take systemic antifungal medication
  • Keep affected area clean and dry
  • Avoid irritants such as tight clothing
  • Use antifungal powders for moisture-prone areas
  • Monitor treatment effectiveness with follow-up
  • Discontinue use of occlusive footwear

Description

Clinical Information

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