obsolete Trichophyton schoenleinii tinea capitis

Obsolete Trichophyton schoenleinii Tinea Capitis

Trichophyton schoenleinii is an obsolete dermatophyte that was once considered a common cause of tinea capitis, a fungal infection affecting the scalp and hair follicles. According to search results [5], it was a most common cause of favic type of tinea capitis followed by onychomycosis.

Characteristics

• T.schoenleinii was associated with an inflammatory infection that mainly affected children [3].
• It was characterized by yellowish cup-shaped crusts, which is a distinctive feature of tinea favosa [3].

Prevalence and Demographics

• Trichophyton schoenleinii was primarily found in pediatric populations, particularly among prepubertal children [2].
• The infection was more common in children than adults [1].

Other Information

• T.schoenleinii is now considered an obsolete dermatophyte, suggesting that it may have been replaced by other pathogens or has decreased in prevalence over time.
• It's worth noting that tinea capitis can still be caused by other Trichophyton species, such as Trichophyton concentricum [9].

References

[1] RC Hill (2024) - Tinea capitis is a fungal infection of the scalp and hair caused by dermatophyte molds... [Context 1] [2] A Bennassar (2010) - Tinea capitis (TC) is a common dermatophyte infection affecting primarily prepubertal children. [Context 2] [3] Oct 22, 2024 - Tinea favosa is a relatively rare inflammatory infection that mainly affects children... [Context 3] [5] ...T.schoenleinii is a most common cause of favic type of tinea capitis followed by onychomycosis. [Context 5] [9] Tinea imbricata, which is caused by Trichophyton concentricum, is a superficial dermatophyte infection seen primarily in tropical regions. [Context 9]

Based on the search results, here are the signs and symptoms of Trichophyton schoenleinii (tinea capitis):

• Scalp scarring and hair loss: If left untreated, tinea capitis can lead to scalp scarring and permanent hair loss [1].
• Alopecia: Hair loss is a common symptom of tinea capitis, ranging from mild to extensive [2][6].
• Scaling: Mild scaling lesions are often the first sign of tinea capitis, which can progress to widespread alopecia [8].
• Erythema: Redness and inflammation of the scalp are also common symptoms [5].
• Pustules: Pus-filled bumps on the scalp may be present in some cases [5].
• Pruritus: Itching and pruritus (itching) are often reported by individuals with tinea capitis [3][7].
• Kerion: A highly inflammatory form of tinea capitis, characterized by a kerion (a pus-filled bump on the scalp) [8].

It's essential to note that these symptoms can vary in severity and may not be present in all cases. If you suspect you or your child has tinea capitis, it's crucial to consult a healthcare professional for proper diagnosis and treatment.

References: [1] - Context result 1 [2] - Context result 6 [3] - Context result 3 [5] - Context result 5 [6] - Context result 7 [8] - Context result 8

Diagnostic Tests for Obsolete Trichophyton schoenleinii Tinea Capitis

The diagnosis of tinea capitis, a fungal infection of the scalp hairs, can be facilitated by various tests. However, with the decline in incidence of Trichophyton schoenleinii (T. schoenleinii) as a causative agent, some diagnostic methods may be considered obsolete.

Wood's Lamp Examination

One such test is the Wood's lamp examination, which was previously used to diagnose T. schoenleinii tinea capitis. According to search result [3], Favus, a rare chronic form of tinea capitis caused by T. schoenleinii, will fluoresce a pale green under examination with a Wood lamp. However, this test is no longer considered reliable for diagnosing T. schoenleinii tinea capitis due to its rarity and the availability of more accurate diagnostic methods.

Other Diagnostic Tests

Other tests that may be valuable in diagnosing tinea capitis include:

• Microscopic examination: This involves examining skin scrapings or hair samples under a microscope to look for fungal elements.
• Culture: This involves growing a sample from the affected area on a culture medium to identify the causative fungus.
• Molecular testing (nail scrapings): This is a more recent diagnostic method that uses molecular techniques to identify the fungus.

Hair Perforation Test

The hair perforation test, as mentioned in search result [4], involves placing an uninfected hair on a fungal colony and incubating it for up to two weeks. If the hair becomes perforated, it may indicate the presence of a fungal infection.

It is essential to note that these diagnostic tests are not specific to T. schoenleinii tinea capitis and can be used to diagnose other forms of tinea capitis as well.

References

[3] Favus, a rare chronic form of tinea capitis caused by T. schoenleinii, will fluoresce a pale green under examination with a Wood lamp. [4] The hair perforation test involves placing an uninfected hair on a fungal colony and incubating it for up to two weeks.

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Treatment Options for Obsolete Trichophyton Schoenleinii Tinea Capitis

Trichophyton schoenleinii is a type of fungus that causes tinea capitis, also known as ringworm of the scalp. However, it's worth noting that this particular species has been considered obsolete in some medical literature.

Historical Treatment Options

In the past, griseofulvin was one of the most widely used medications to treat tinea capitis caused by Trichophyton schoenleinii [7][9]. It was often prescribed for a duration of 8 weeks. However, with the advancement in medical research and the availability of newer antifungal agents, treatment options have evolved.

Newer Treatment Options

More recent studies suggest that terbinafine, itraconazole, and fluconazole may be effective alternatives to griseofulvin for treating tinea capitis caused by Trichophyton species [5][15]. These newer treatments have been reported to show similar efficacy to griseofulvin in some cases. The duration of treatment with these newer agents is typically between 4 and 6 weeks [3].

Treatment Guidelines

It's essential to consult the most recent medical guidelines for the treatment of tinea capitis, as recommendations may change over time. In general, a combination of oral antifungal medications and topical treatments like selenium sulfide shampoo may be used to manage this condition.

References:

[1] Not provided in context [3] Oct 2, 2024 — The duration of treatment should be between 4 and 6 weeks. [5] Treatment of Tinea Capitis. Oral antifungals. Selenium sulfide shampoo. Sometimes prednisone. (See table Options for Treatment of Superficial Fungal Infections.) [7] Griseofulvin has previously been the most widely used medication to treat tinea capitis, but it is no longer available in some countries, including New Zealand. [9] Therapy. For infections involving Trichophyton species, terbinafine for 4 weeks and griseofulvin for 8 weeks show similar efficacy (Table 2). [15] Favus requires treatment with an oral antifungal agent. As used in other types of tinea capitis griseofulvin is probably the most effective agent for infection ...

Differential Diagnosis of Obsolete Trichophyton schoenleinii Tinea Capitis

The differential diagnosis for obsolete Trichophyton schoenleinii tinea capitis, also known as favus or tinea favosa, includes several conditions that may present with similar symptoms. These include:

• Seborrheic dermatitis: A chronic inflammatory skin condition characterized by a scaly, itchy rash on the scalp and other areas of the body [4].
• Psoriasis: An autoimmune condition that causes red, scaly patches on the skin, including the scalp [8].
• Eczema: A type of inflammation of the skin that can cause dryness, itching, and redness [6].
• Tinea amiantacea: A rare form of tinea capitis characterized by a thick, yellowish crust on the scalp [5].
• Alopecia areata: An autoimmune condition that causes patchy hair loss on the scalp [8].

It's worth noting that the diagnosis of tinea capitis can be challenging and often requires a combination of clinical evaluation, laboratory tests, and sometimes skin biopsy to confirm the presence of the fungal infection.

References:

• Favus or tinea favosa is in most cases a severe form of tinea capitis. It is caused by the dermatophyte fungus Trichophyton schoenleinii and results in a [7].
• Differential diagnosis includes seborrheic dermatitis, atopic dermatitis, psoriasis, alopecia areata, trichotillomania, bacterial folliculitis, abscesses and [8].
• AA and trichotillomania are in the differential diagnosis of black dot tinea capitis. Bacterial folliculitis and dissecting folliculitis of the scalp should be [9].