Symptoms of Tinea Capitis
Tinea capitis typically presents with patchy hair loss accompanied by varying degrees of scalp scaling and erythema, though the clinical appearance is highly variable depending on the causative organism and host inflammatory response. 1
Core Clinical Features
The most common symptoms include:
- Patchy alopecia (hair loss in distinct areas)
- Scalp scaling (ranging from fine to thick)
- Erythema (redness of affected areas)
However, clinical signs may be subtle and diagnosis can be challenging, as the presentation varies significantly based on the infecting dermatophyte species and the degree of inflammation 1.
Non-Inflammatory Patterns
Grey Patch Variant
- Fine scaling with patchy circular alopecia
- Dull grey appearance due to fungal spores coating hairs
- Typically caused by Microsporum species (ectothrix infection)
- Minimal inflammation with anthropophilic fungi, but more intense response with zoophilic species 1
Black Dot Variant
- Patches of alopecia with fine scale
- Broken-off, swollen hair stubs at scalp surface creating "black dot" appearance
- Multiple patches may be present
- Caused by Trichophyton species (endothrix infection) such as T. tonsurans, T. violaceum 1, 2
Diffuse Scale Variant
- Generalized, diffuse scaling resembling dandruff
- Minimal or absent alopecia
- Often misdiagnosed as seborrheic dermatitis 1, 2
Inflammatory Patterns
Diffuse Pustular Variant
- Diffuse, patchy alopecia
- Scattered pustules or low-grade folliculitis
- Painful regional lymphadenopathy commonly present 1
Kerion
- Painful, boggy, inflammatory mass with associated alopecia
- Solitary or multiple plaques studded with pustules
- Matted with thick crust
- Regional lymphadenopathy is common
- Represents delayed host inflammatory response to dermatophyte
- Critical pitfall: Frequently misdiagnosed as bacterial abscess, leading to delayed appropriate treatment 1
Favus (Rare)
- Yellow, crusted, cup-shaped lesions ("scutula") around follicular openings
- Chronic inflammatory variant
- May result in permanent scarring alopecia
- Fluoresces under Wood's lamp
- Most common in Middle East and North Africa 1
Key Clinical Considerations
Age distribution: Predominantly affects healthy prepubertal children (peak incidence 3-7 years); infants less frequently affected. Adults rarely affected except when immunocompromised, where presentation may be atypical 1, 2.
Common pitfall: Clinicians unfamiliar with this condition often misdiagnose tinea capitis, especially inflammatory variants like kerions, leading to delays in diagnosis and inappropriate management with antibiotics rather than antifungals 1.
Associated symptoms:
- Pruritus (itching) may range from minimal to severe
- Pain (particularly with inflammatory variants)
- Tenderness with kerion formation 3
Dermoscopic findings (when available):
- "Black dot" hair stubs more clearly visualized
- "Comma-shaped" hairs in white children with ectothrix infection
- Corkscrew hairs in Afro-Caribbean children 1
Important note: A pruritic, papular "id" eruption (dermatophytid) may appear around the outer ear helix during treatment initiation—this represents a cell-mediated host response and should not be confused with drug allergy or treatment failure 1.