Tinea: Difference between revisions
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==Background== | ==Background== | ||
* | *Fungal infection caused by dermatophytes that feed on keratin | ||
{{Tinea types}} | |||
[[File:TineaCorp.jpg|thumb|[[Tinea corporis]]]] | |||
[[File:TineaCapit-001.jpg|thumb|[[Tinea capitis]]]] | |||
[[File:TineaCorp.jpg| | |||
[[File:TineaCapit-001.jpg| | ==Clinical Features== | ||
[[File:Jock itch.jpg|thumb|[[Tinea cruris]]]] | |||
*Scaly, with variable [[pruritus]] | |||
*[[Tinea corporis|Corporis]]: ring appearance with central clearing | |||
*[[Tinea capitis|Capitis]]: patchy alopecia | |||
==Differential Diagnosis== | ==Differential Diagnosis== | ||
*Pityriasis rosea | *[[Pityriasis rosea]] | ||
*Lichen planus | *[[Lichen planus]] | ||
*Psoriasis | *[[Psoriasis]] | ||
*Eczema | *[[Eczema]] | ||
*Contact dermatitis | *[[Contact dermatitis]] | ||
== | ==Evaluation== | ||
* | *Clinical diagnosis with Wood's lamp | ||
*Kerion | *Kerion | ||
**[[ | **Painful, itchy, eczematous | ||
**[[alopecia|Hair loss]] | |||
**[[Fever]], malaise | |||
**[[Lymphadenopathy]] | |||
==Management== | |||
{{Tinea management}} | |||
== | ==Disposition== | ||
*Discharge | |||
==See Also== | ==See Also== | ||
*[[Rashes]] | *[[Rashes]] | ||
*[[Dermatophytosis]] | |||
==References== | |||
<References/> | |||
[[Category: | [[Category:Dermatology]] | ||
[[Category:Pediatrics]] | |||
[[Category:ID]] | |||
Latest revision as of 17:01, 1 March 2023
Background
- Fungal infection caused by dermatophytes that feed on keratin
Tinea Types
- Tinea capitis (head)
- Tinea corporis (body)
- Tinea pedis (foot)
- Tinea cruris (groin)
Clinical Features
- Scaly, with variable pruritus
- Corporis: ring appearance with central clearing
- Capitis: patchy alopecia
Differential Diagnosis
Evaluation
- Clinical diagnosis with Wood's lamp
- Kerion
- Painful, itchy, eczematous
- Hair loss
- Fever, malaise
- Lymphadenopathy
Management
Coverage for Trichophyton and Epidermophyton and all treatment should be at lease 1 week past resolution of lesions
Topical Therapy
Applies to Tinea corporis, pedis, cruris, and manus
Must use a topical therapy for 7-10days beyond resolution of lesions
- Topical antifungal treatment for all except tinea capitis
- Terbinafine 1% BID x2-3weeks or
- Clotrimazole 1% BID x2-3weeks or
- Ketoconazole 1% BID x2-3weeks
Capitis
- Griseofulvin 500mg-1000mg PO once daily (20-25mg/kg/d)
- Usually requires 8wk of treatment
- Terbinafine for 2-4 weeks is as effective of 6-8 weeks of griseofulvin[1]
- 62.5mg/day in children <20kg
- 125mg/day in children 20-40kg
- 250mg/day in children >40kg[2]
- Selenium sulfide or ketoconazole shampoos are adjunct treatment
- Children can return to school during treatment
Kerion
- Oral griseofulvin, itraconazole, or terbinafine for 6-8 wks[3]
- Cephalexin 40mg/kg/d in 4 divided doses in addition to systemic antifungal treatment if there is evidence or high risk of bacterial secondary infection
- Ketoconazole shampoo, isolated towels decrease spread to household members
Tinea corporis
First line should be topical therapy. For refractory cases or severe bullous disease the below anti-fungals are all equivalent options.
- Fluconazole 150mg (6mg/kg) PO once a week x 2 weeks or
- Itraconazole 200mg (5mg/kg) PO daily q12hrs for 1 week or
- Griseofulvin 500-1000mg (20mg/kg) PO daily for 2-4 weeks
Disposition
- Discharge
See Also
References
- ↑ Fleece D, Gaughan JP, Aronoff SC. Griseofulvin versus terbinafine in the treatment of tinea capitis: a meta-analysis of randomized, clinical trials. Pediatrics. 2004;114(5):1312-1315. doi:10.1542/peds.2004-0428
- ↑ Andrews MD, Burns M: Common tinea infections in children. Am Fam Physician 2008;77(10):1415-1420.
- ↑ Gnanasegaram M. Kerion. DermNet NZ. 2012. http://www.dermnetnz.org/fungal/kerion.html