Black dot tinea capitis causes hair shafts to break at the surface, which look like black dots. Gray patch tinea capitis leaves short hair stubs. What causes tinea capitis? Mold-like fungi called dermatophytes cause tinea capitis.
In the United States, dermatophytes called Microsporum and Trichophyton are the most common causes of the infection. Black dot: fine scaling with patches of alopecia, which appear speckled with black dots. The "dots" are broken hair shafts secondary to endothrix infection.
Tinea capitis scalp, causes, symptoms, diagnosis & tinea capitis treatment
Diffuse scale: resembles generalised dandruff; alopecia is subtle or absent. Inflammatory Inflammatory variants of tinea capitis infection include the following. As reported in the guidelines for the management of TC in England, the first-line treatment is terbinafine for trichophytic tinea (commonly manifested as the black dot) and griseofulvin for microsporic tinea (commonly manifested as the gray patch).
Other manifestations include a common "black dot" pattern reflecting stubs of broken-off hairs at the scalp surface; a less common "grey patch" seborrheic dermatitis-like pattern with or without hair loss and prominent, well-demarcated areas of scaling and erythema; or a vesiculopustular pattern resembling bacterial folliculitis. Most often, it presents with dry scaling of the scalp and a grey patch. Black dots represent hairs that are broken off at the scalp surface.
Ringworm Hair Loss: Signs, Causes & Treatments | Longevita
More rarely, patients may develop a kerion (boggy, inflamed, pus-filled lump). If left untreated, these lesions may result in permanent scarring and bald areas. Patients may also develop cervical.
Tinea capitis may cause a dry scaly rash that may be somewhat itchy, a patch of hair loss (alopecia), or both. One type of fungus causes "black dot" ringworm, in which hair shafts break at the scalp surface. Another type of fungus causes "gray patch" ringworm, in which hair shafts break above the scalp surface, leaving short stubs.
Black Spot On Face
The most common clinical variant was gray patch followed by kerion and black dot, and the most common etiological agent was Trichophyton tonsurans. There are three types of tinea capitis: gray patch, black dot, and favus. Black dot, caused by Trichophyton tonsurans, is most common in the United States (Figure 2) 6.
Tinea capitis features include patchy alopecia with scaling, broken hairs and variable inflammation such as pustules or kerion, with signs ranging from grey patches to black dots. Patches of discolored skin have many possible causes, including birthmarks, rashes, infections, and skin cancer. about when to see a doctor here.
