Signs Of Tinea
Parasitical Worms.com Diseases caused by skin fungus include many abnormal manifestations in the skin, nails, and hair, caused by dermatophytes.
This group of agents is more invasive than other peripheral pathogenic fungi, but is primarily limited to keratin. The degree of pathology varies from minor lesions, desquamation to widespread inflammation, which penetrates deep into the dermis (dermis) causing festering lesions.
Dermatophytes include dermporum spp., Trichophyton spp
.canis, M.gypseum .., others only occur in certain countries or regions such as T.soudanense in Chau
Image foot fungus
Ringworm also has a diverse distribution of sources of itching, so the way of infection also varies by species. Based on the normal ecological cradle, ringworm is divided into three groups: anthropophilic dermatophytes, zoophilic dermatophytes and geophilic dermatophytes. All three groups can cause disease in humans.
Ringworm likes people:
Survive and cause disease mainly on the human body. They spread from person to person; or indirectly through clothes, bedding, hats, chairs, soil, swimming pools .. or directly due to close contact with patients (for example: T.rubum, T.mentagrophytes, E.floccosum, M. audouinii, M.ferrugineum .
Ringworm is interesting
Includes those isolated from leather or fur. People infected by direct or indirect contact with infected animals or skin scales, furs containing fungal spores falling on bedding, floors, etc. (for example: M.canis / cats, T.mentagrophytes / horses, rabbits, T.verrucosum / cattle). Lesions caused by this fungal infection are often more severe, even blind.
Ringworm likes soil
Saprophytic living in soil, people or animals infected by contact with the soil (eg M.
gypseum), so the soil-loving group is a common agent in upland and horticultural farmers.
On the human body, the ability of ringworm to cause disease also varies according to the type of keratin tissue.
Table 1: Dermatological distribution of dermatobacteria by body position
Many studies show that the pathogenicity of dermatophytes depends not only on the type of fungus, but also factors related to host play an important role. Favorable factors may be the body's immune status; material of clothes, shoes used; moisture levels of the skin .. After penetrating the epidermis, the fungus that produces keratinase breaks down keratin into food and grows but cannot penetrate deep into the dermis.
. One theory is that cell immunity and transferrin in the serum prevent fungal pathogens from entering the underlying tissue, so dermatophytes are unlikely to cause systemic disease in humans.
2. SYMPTOMS OF SKIN DISEASE
Clinically, skin fungi can be divided into three groups:
Scalp fungus: An injury in the hair, possibly in the scalp.
Tinea: Parasitic fungi in the epidermis.
Head fungus (tinea capitis, ringworm, teigne)
Fungal infections include cases of ringworm infections in the hair, scalp, sometimes spreading to eyebrows and eyelashes The disease occurs mainly in children from 4 to 14 years old. Crowded living conditions, poor hygiene and malnutrition are favorable factors for disease development. The clinical picture varies according to the pathogen, which can be classified into the following four forms: gray patches, dark spots, festering and concave bowls.
Gray patch mushroom (gray patch, teigne tondante microsporique).
The causative agent is the predominant microsporum species such as M.audouinii, M.langeronlangeron, but can also be due to interesting species like M.canis, from dogs and cats, which are common in Western Europe .
Subjects receptors are children from 6 to 10 years old, rarely occurs in children over 12 years old. Microsporum infections are very contagious, easily causing a major epidemic in schools or places where children live concentratedly.
The first lesions are erythematous papules that appear around the hairline, then develop into one or several loose, round patches of hair about 2 - 6 cm in diameter, on the surface covered with a layer of light gray scales; Gradually the lesions will spread throughout the scalp. The degree of inflammation of the scalp will be more severe if the causative fungus is M.canis.
The hair of the parasite is a few millimeters from the scalp, losing its shine and fluorescing green under the light of the Wood lamp.
Black-dot mushroom (black dot, teigne tondante trichophytique)
Black-spotted mushroom is commonly found in boys under 12 years of age, highly contagious, caused by human-like Trichophyton species (T.tonsurans, T..violaceum, T.soudanense ...).
Red scalp inflammation in the form of many round patches, size from 0.5 - 1cm, limited unknown because diseased hair is interspersed with healthy hair in the damaged area.
Hair cut close to the scalp to create dark spots can be. . Dịch vụ: Thiết kế website, quảng cáo google, đăng ký website bộ công thương uy tín
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