tonsurans is an endothrix
infection, invading the hair shaft and superficial hair while M.
type of invasion, for example by Trichophyton violaceum and T.
On the other hand, the observations of fungal filaments with Arthroconidia, Ectothrix or Endothrix
, and the fungal filaments in hair shaft were indicative of the Dermatophytosis and Tinea Faciei.
Microscopical examination of skin scrapings and epilated hair after overnight digestion in 10% KOH solution revealed endothrix
pattern of arthrospores within the hair.
Classification and severity of Tinea capitis depends on how fungus invades the hair shaft and the formation of their arthroconidia.6 There are three recognised patterns: Endothrix
where the hair shaft is filled with fungal branches (hyphae) and spores (arthroconidia) clinically termed black dot.
Diagnosis of dermatophytes in hair pieces was made by the visualisation of arthroconidia arranged along the length of the hair in chains or masses around the hair (ectothrix infection) or in the hair substance (endothrix
On high-power magnification, hyphae are seen within the hair shaft in endothrix
tinea or in a cuff outside the hair shaft in ectothrix tinea.
The samples were kept for 20 minutes and then examined for the presence of ectothrix or endothrix
spores in addition to filamentous, septate, branched hyphae with or without arthrospores and trichospores.
However, with tinea capitis infections that are caused by the Trichophytan species, the fungal spores form on the inside of the hair shaft (endothrix
), and there is no fluorescence (Fuller et al., 2003).
One way is endothrix
in which fungal growth and spore formation are confined mainly within the hair shaft without formation of external spores.
Comma hairs, which are slightly curved and fractured hair shafts, are associated with ectothrix and endothrix
type fungal invasion.
Wood's lamp examination can confirm exothrix fungal infections (infection on surface of hair) while in endothrix
infections (fungus invades hair shaft), the inflorescence is not seen.