Malassezia

Malassezia spores. Due to progressive changes in their nomenclature, some confusion exists about the naming and classification of Malassezia yeast species. Work on these yeasts has been complicated because they require specific Malassezia were originally identified by the French scientist Pityrosporum malassez, honoring Malassez, but at the species level as opposed to the genus level. When it was determined that the organisms were the same, the term "Malassezia" was judged to possess In the mid-twentieth century, it was reclassified into two species: • Pityrosporum (Malassezia) ovale, which is P. ovale was later divided into two species, P. ovale and P. orbiculare, but current sources consider these terms to refer to a single species of fungus, with M. furfur the preferred name. • Pityrosporum (Malassezia) pachydermatis, which is lipophilic but not lipid-dependent. It is found on the skin of most animals. In the mid-1990s, scientists at the Malassezia is the sole genus in the family Malasseziaceae, which was validated by Cvetomir Denchev and Species [ ] Malassezia. Malassezia from another genus; standardized • Honnavar, Rudramurthy, G.S.Prasad & Chakrabarti • F.J.Cabañes, S.D.A.Coutinho, M.R.Bragulat & G.Castellá • J.Cabañes & Boekhout • J.Cabañes & G.Castellá • Sugita, M.Takash., A.Nishikawa & Shinoda • Nell, S.A.James, C.J.Bond, B.Hunt & Herrtage • J.Cabañes & Boekhout • (C.P.Robin) Baill. • Midgley, E.Guého & J.Guillot • Sugita, M.Takash., M.Kodama, Tsuboi & A.Nishikawa...

The Medical City The Medical City (TMC), the largest healthcare network in the country, is composed of one flagship complex, four provincial hospitals, and over 50 clinics in Metro Manila and in select provinces in the Philippines. Today, TMC Main serves some 50,000 inpatients and 500,000 outpatients a year. Malassezia fungus infection The different species of Malassezia inhabit the skins of a vast majority of adults without causing any particular harm or posing any danger. In some individuals, the yeast suppresses the body’s response against the proliferation of the fungus. This leads to skin disorders, without the body producing an inflammatory response. Irritating the metabolites of the yeast may also cause dermatitis, or irritation of the skin. What causes Malassezia fungus infection? Listed below are some factors that may cause Malassezia fungus infection: • Sweating – Sweat gives the skin qualities that the yeast needs to proliferate. • Immunodeficiency – Doctors have observed that immunodeficiency is a causative agent of Malassezia fungus infection. This is regardless of how the deficiency was attained, be it from immunosuppression medications, corticosteroids, or by way of an • Acne and usage of oral antibiotics – Acne also plays a role in promoting an encouraging environment for Malassezia, especially when patients use products such as tetracyclines. What kills Malassezia yeast: Signs and Symptoms Symptoms of a Malassezia yeast infection primarily consist of red, ...

Your skin is home to many yeasts that coexist peacefully with you. One of these is pityrosporum, a yeast that could be the reason your acne doesn’t go away. If you’ve been using acne medicine or other remedies, but it doesn’t seem to get better, talk to your doctor about getting tested for pityrosporum folliculitis. Pityrosporum is responsible for What Causes It? ‌Pityrosporum folliculitis is caused by a yeast called pityrosporum or malassezia. Pityrosporum is found on everyone’s skin. The yeast forms part of the skin flora, also known as the However, when it gets down into the hair follicles and multiplies, an itchy, acne-like eruption follows, called folliculitis. It’s important to note that folliculitis is not contagious, infectious, or an indicator of poor ‌ Since yeast grows in warm, moist environments, it tends to multiply in conditions that have plenty of humidity, perspiration, and heat. People who have systemic diseases like diabetes are also at risk. Risk factors include: • Adolescence • Immunosuppression • Diabetes • Steroid or antibiotic use • • Being male Symptoms of Pityrosporum Folliculitis ‌Although it affects people of all sexes, young and middle-aged males are more at risk of fungal acne than other people. Breakouts appear as small, red bumps appearing to rise uniformly from your hair follicles. They often appear in symmetric rows on the forehead or scattered on the cheeks. It can also develop on your upper back or upper chest. In acute cases, fungal acne...

Enter search terms to find related medical topics, multimedia and more. Advanced Search: • Use “ “ for phrases o [ “pediatric abdominal pain” ] • Use – to remove results with certain terms o [ “abdominal pain” –pediatric ] • Use OR to account for alternate terms o [teenager OR adolescent ] Search A-Z Tinea versicolor is skin infection with Malassezia furfur that manifests as multiple asymptomatic scaly patches varying in color from white to tan to brown to pink. Diagnosis is based on clinical appearance and potassium hydroxide wet mount of skin scrapings. Treatment is with topical or sometimes oral antifungals. Recurrence is common. Malassezia furfur is a fungus that can exist as both a yeast and as a mold (a dimorphic fungus). It is normally a harmless component of normal skin flora but that in some people causes tinea versicolor. Most affected people are healthy. Factors that may predispose to tinea versicolor include heat and humidity and immunosuppression due to corticosteroids, pregnancy, undernutrition, diabetes, or other disorders. Hypopigmentation in tinea versicolor is due to the inhibition of tyrosinase caused by M. furfur production of azelaic acid. Symptoms and Signs of Tinea Versicolor Tinea versicolor is asymptomatic. Classically, it causes the appearance of multiple tan, brown, salmon, pink, or white scaling patches on the trunk, neck, abdomen, and occasionally face. The lesions may coalesce. In light-skinned patients, the condition is often diagnosed in sum...

Pityrosporum folliculitis is a condition in which the hair follicles of the sebaceous areas (upper trunk, shoulders, and occasionally head and neck) are infected with Pityrosporum (Malassezia) yeasts, resulting clinically in inflammatory papules and pustules. Patients with Pityrosporum folliculitis typically present complaining of pimples or bumps, which may be pruritic, on the upper trunk and shoulders. The eruption has often been present for many months. Patients sometimes will believe they have acne on their trunk, as the two conditions can be quite similar. The severity may wax and wane, depending on activity, time of year, and other factors. Ask whether the patient has oily skin or sweats a lot, which may predispose to Pityrosporum overgrowth. Ask about a history of immunocompromise, cancer, diabetes, or use of antibiotics or corticosteroids, as all may increase the likelihood of developing Pityrosporum folliculitis. • Characteristic findings on physical examination The characteristic physical findings in Pityrosporum folliculitis are symmetrically arranged monomorphic 1-3mm follicular flesh-colored to erythematous papules and pustules on the back, chest (Figure 1), shoulders, and less commonly, head and neck. Unlike acne vulgaris, Pityrosporum folliculitis does not present with comedones (blackheads and whiteheads), nodules, or cysts. However, patients may have both conditions simultaneously, since both commonly affect young people and the use of antibiotics for acne...