B35.0 Tinea barbae and tinea capitis

Name of the Condition

• Tinea barbae and tinea capitis
  
  • Common names: Ringworm of the beard, Ringworm of the scalp

Summary

Tinea barbae and tinea capitis are fungal infections caused by dermatophytes that affect the hair and skin of the beard (tinea barbae) or scalp (tinea capitis). These conditions are characterized by hair loss, scaling, and inflammation in the affected areas. Tinea barbae typically involves the beard and adjacent skin, while tinea capitis affects the scalp and hair shafts.

Causes

Both conditions are caused by dermatophyte fungi, most commonly Trichophyton and Microsporum species. These fungi invade the keratinized structures of hair and skin, leading to infection. Transmission often occurs through direct contact with infected individuals, animals, or contaminated objects like combs or towels.

Risk Factors

• Close contact with infected people or animals (e.g., pets)
• Sharing personal items (e.g., hats, brushes, razors)
• Weakened immune system (e.g., due to illness or medication)
• Poor hygiene or overcrowded living conditions
• Participation in activities with shared surfaces (e.g., schools, locker rooms)

Symptoms

• Tinea barbae:
  
  • Red, inflamed patches on the beard or face
  • Swelling, pustules, or crusts around hair follicles
  • Partial or complete hair loss in affected areas
  • Itching or discomfort
• Tinea capitis:
  
  • Patchy hair loss on the scalp
  • Scaling, dandruff-like flakes, or black dot-like spots (broken hair shafts)
  • Red, scaly, or bald patches
  • Itching or mild pain

Diagnosis

Diagnosis is based on clinical evaluation of the affected area, including hair and skin examination. A KOH (potassium hydroxide) test of skin scrapings or hair samples may be performed to detect fungal elements under a microscope. Fungal culture can confirm the specific dermatophyte species and guide treatment.

Treatment Options

• Topical antifungal agents: Applied to the skin or scalp for mild cases.
• Oral antifungal medications: Prescribed for moderate to severe infections, especially tinea capitis, to target the fungus systemically.
• Hair removal: For tinea barbae, shaving the affected beard area may aid in treatment.
• Hygiene measures: Regular cleaning of the affected area and avoiding sharing personal items to prevent spread.

Prognosis and Follow-Up

With appropriate treatment, most cases resolve within weeks to months. Hair regrowth is common in tinea capitis, though scarring or permanent hair loss may occur in severe or untreated cases. Follow-up appointments may be recommended to monitor response to therapy and prevent recurrence.

Complications

• Permanent hair loss or scarring (especially with delayed treatment)
• Secondary bacterial infections from scratching
• Spread to other areas of the body or to others through contact

Lifestyle & Prevention

• Avoid sharing personal items (e.g., combs, hats, razors).
• Keep the affected area clean and dry.
• Wash hands after touching the infected area.
• Treat infected pets or household members to prevent reinfection.

When to Seek Professional Help

Consult a healthcare provider if symptoms worsen, persist despite home care, or if there are signs of secondary infection (e.g., increased redness, pus, fever). Prompt evaluation is important for severe or widespread cases.

Tips for Medical Coders

• Use code B35.0 for tinea barbae and tinea capitis.
• Document the specific location (e.g., beard, scalp) and any associated symptoms (e.g., hair loss, inflammation) to support code assignment.
• Differentiate from other fungal infections (e.g., tinea corporis) by noting the affected body part and clinical presentation.
• Include details about treatment or diagnostic tests if available to clarify the condition’s severity or complexity.