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Favus
Favus (Latin for "honeycomb") or tinea favosa is the severe form of tinea capitis, a skin infectious disease caused by the dermatophyte fungus '' Trichophyton schoenleinii.'' Typically the species affects the scalp, but occasionally occurs as onychomycosis, tinea barbae, or tinea corporis. The word ''favid'' is more used than French word ''favus'', which is close to the Latin etymology. Presentation The uncomplicated appearance is that of a number of yellowish, circular, cup-shaped crusts ( scutulum or shield) grouped in patches like a honeycomb, each crust about the size of a split pea, with a bundle of hair projecting in the center. These increase in size and become crusted over, so that the characteristic lesion can only be seen round the edge of the scab. A mousy odour is often present. Growth continues to take place for several months, when scab and scutulum go away, leaving a shining bare patch destitute of hair. The disease is essentially chronic, lasting from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Tinea Capitis
Tinea capitis (also known as "herpes tonsurans", "ringworm of the hair", "ringworm of the scalp", "scalp ringworm", and "tinea tonsurans") is a cutaneous fungal infection ( dermatophytosis) of the scalp. The disease is primarily caused by dermatophytes in the genera '' Trichophyton'' and '' Microsporum'' that invade the hair shaft. The clinical presentation is typically single or multiple patches of hair loss, sometimes with a 'black dot' pattern (often with broken-off hairs), that may be accompanied by inflammation, scaling, pustules, and itching. Uncommon in adults, tinea capitis is predominantly seen in pre- pubertal children, more often boys than girls. At least eight species of dermatophytes are associated with tinea capitis. Cases of ''Trichophyton'' infection predominate from Central America to the United States and in parts of Western Europe. Infections from ''Microsporum'' species are mainly in South America, Southern and Central Europe, Africa and the Middle East. The di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Scalp
The scalp is the area of the head where head hair grows. It is made up of skin, layers of connective and fibrous tissues, and the membrane of the skull. Anatomically, the scalp is part of the epicranium, a collection of structures covering the cranium. The scalp is bordered by the face at the front, and by the neck at the sides and back. The scientific study of hair and scalp is called trichology. Structure Layers The scalp is usually described as having five layers, which can be remembered using the mnemonic 'SCALP': * S: Skin. The skin of the scalp contains numerous hair follicles and sebaceous glands. * C: Connective tissue. A dense subcutaneous layer of fat and fibrous tissue that lies beneath the skin, containing the nerves and vessels of the scalp. * A: Aponeurosis. The epicranial aponeurosis or galea aponeurotica is a tough layer of dense fibrous tissue which anchors the above layers in place. It runs from the frontalis muscle anteriorly to the occipitalis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Robert Remak
Robert Remak (26 July 1815 – 29 August 1865) was an embryologist, physiologist and neurologist, born in Posen, Prussia, who discovered that the origin of cells was by the division of pre-existing cells. as well as several other key discoveries. According to historian Paul Weindling, Rudolf Virchow, one of the founders of modern cell theory, plagiarized Remak's notion that all cells come from pre-existing cells. Remak had concluded this after observing red blood cells from chicken embryos in various stages of division. He then confirmed that the phenomenon existed in the cell of every frog's egg immediately after fertilization, proving that this was a universal phenomenon and finally explaining the reason for the results of tests by Louis Pasteur which had previously proved that there exists no spontaneous generation of life. Remak obtained his medical degree from Friedrich Wilhelm University in Berlin (now Humboldt University of Berlin) in 1838 specializing in neurology. He ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Mycology
Mycology is the branch of biology concerned with the study of fungus, fungi, including their Taxonomy (biology), taxonomy, genetics, biochemistry, biochemical properties, and ethnomycology, use by humans. Fungi can be a source of tinder, Edible mushroom, food, traditional medicine, as well as entheogens, poison, and fungal infection, infection. Yeasts are among the most heavily utilized members of the fungus kingdom, particularly in food manufacturing. Mycology branches into the field of phytopathology, the study of plant diseases. The two disciplines are closely related, because the vast majority of plant pathogens are fungi. A biologist specializing in mycology is called a mycologist. Overview The word ''mycology'' comes from the Greek language, Ancient Greek: wikt:μύκης, μύκης (''mukēs''), meaning "fungus" and the suffix (''-logia''), meaning "study." Pioneer mycologists included Elias Magnus Fries, Christiaan Hendrik Persoon, Heinrich Anton de Bary, Elizabeth E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Scutula
''Scutula'' is a genus of lichenicolous fungi in the family Ramalinaceae. Taxonomy The genus ''Scutula'' was circumscribed by French botanist Louis René Étienne Tulasne in 1862. The limits of the generic circumscription as well as the limits of certain species in ''Scutula'' was confused for a long time. In 1997, Triebel and colleagues applied the name ''Scutula'' specifically to a group of species growing on hosts of the Lecanorales suborder Peltigerineae, a monophyletic grouping of cyanobacteria-associated lichens. Before this, ''Scutula'' was applied to a diverse set of unrelated lichenicolous fungi featuring hyaline spores with a single septum and sessile apothecia. Once classified in the family Micareaceae, molecular phylogenetic analysis showed ''Scutula'' to be nested within the Ramalinaceae, closely related to the genus '' Toninia''. This familial placement has been accepted in recent large-scale updates of fungal classifications. Description ''Scutula'' species ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Paul Gerson Unna
Paul Gerson Unna, (September 8, 1850, Hamburg – January 29, 1929, Hamburg) was a German physician specialized in dermatologist, dermatology and one of the pioneers in dermatopathology. Biography Paul Unna was born to German Jewish parents Moritz Adolph Unna, a physician from Hamburg. Unna was educated at the Gelehrtenschule des Johanneums and Ida Gerson, who descended from a long line of physicians. He began to study medicine at the University of Heidelberg, but had to interrupt it in order to fight in the Franco-Prussian war, where he was severely wounded. In 1871, he resumed his studies in Heidelberg and later went to the University of Leipzig, finally attaining a doctorate under Heinrich Wilhelm Waldeyer in Strasbourg. His doctoral work was on the subject of the histology and development of the Epidermis (skin), epidermis, and was published in 1876. The thesis contained a set of new ideas and aspects that were met with hard criticism. They were accepted only after some corr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Achorion
''Achorion'' is an obsolete genus of dermatophyte fungus. The species previously belonging to genus ''Achorion'' have been moved to other genera. Some notable species include: * ''A. quinckeanum'' — now named ''Trichophyton quinckeanum'', the species which causes favus in mice. * ''A. schoenleinii'' — now named ''Trichophyton schoenleinii'', or "Schönlein's tricophyton", the species which causes favus in humans. * Other pathogenic fungi occasionally found in humans: **''A. arloingi'', now called '' Aleurisma arloingi'' **''A. gypseum'', now called ''Microsporum gypseum'' Sources * American Illustrated Medical Dictionary ''Dorland's'' is the brand name of a family of medical reference works (including dictionaries, spellers and word books, and spell-check software) in various media spanning printed books, CD-ROMs, and online content. The flagship products are ''Do ... (Philadelphia and London, 1938) Ascomycota genera Parasitic fungi {{Ascomycetes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
David Gruby
David Gruby (20 August 1810 – 14 November 1898) was a Hungarian physician born in the village of Kis-Kér (now Bačko Dobro Polje, Serbia) to a Jewish farmer.Geoffrey Clough Ainsworth, ''Introduction to the History of Medical and Veterinary Mycology'', Cambridge University Press (2002), p. 13 He received his doctorate in Vienna and performed scientific research in Paris. Gruby is remembered as a pioneer in the fields of microbiology and Pathogenic fungi, medical mycology. Most of his important work was done during the 1840s, when he reported that human disease could be caused by fungi. In 1841 he described the fungus associated with favus, a discovery that was independent of Johann Lukas Schönlein's (1793–1864) findings. Later, the fungal parasite was called ''Achorion schoenleinii'' in Schönlein's honor. In 1842 he described a microscopic cryptogam (''Trichophyton ectothrix'') that is associated with a dermatology, dermatological disease known as ''sycosis barbae''. Gruby ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Johannes Peter Müller
Johannes Peter Müller (14 July 1801 – 28 April 1858) was a German physiologist, comparative anatomist, ichthyologist, and herpetologist, known not only for his discoveries but also for his ability to synthesize knowledge. The paramesonephric duct (Müllerian duct) was named in his honor. Life Early years and education Müller was born in Coblenz. He was the son of a poor shoemaker, and was about to be apprenticed to a saddler when his talents attracted the attention of his teacher, and he prepared himself to become a Roman Catholic Priest. During his college course in Koblenz, he devoted himself to the classics and made his own translations of Aristotle. At first, his intention was to become a priest. When he was eighteen, his love for natural science became dominant, and he turned to medicine, entering the University of Bonn in 1819. There he received his M.D. in 1822. He then studied at the University of Berlin. There, under the influence of G. W. F. Hegel and Kar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Johann Lukas Schönlein
Johann Lukas Schönlein (30 November 1793 – 23 January 1864) was a German naturalist, and professor of medicine, born in Bamberg. He studied medicine at Landshut, Jena, Göttingen, and Würzburg. After teaching at Würzburg and Zurich, he was called to Berlin in 1839, where he taught therapeutics and pathology. He served as physician to Frederick William IV. Work He was one of the first German medical professors to lecture in the vernacular tongue instead of Latin. Schönlein described ''purpura rheumatica'' (Schönlein's disease) an allergic non- thrombopenic purpura rash that became known as Henoch–Schönlein purpura, though now known as IgA vasculitis. He also discovered the parasitic cause of ringworm or favus ('' Trichophyton schönleinii''). J. L. Schönlein first published the name "tuberculosis" (German: ''Tuberkulose'') in 1832.The word "tuberculosis" first appeared in Schönlein's clinical notes in 1829. See: See especially Appendix, p. iii. Prior to Schö ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Fungal Disease
A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as one of the traditional eukaryotic kingdoms, along with Animalia, Plantae, and either Protista or Protozoa and Chromista. A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. Fungi, like animals, are heterotrophs; they acquire their food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment. Fungi do not photosynthesize. Growth is their means of mobility, except for spores (a few of which are flagellated), which may travel through the air or water. Fungi are the principal decomposers in ecological systems. These and other differences place fungi in a single group of related organisms, named the ''Eumycota'' (''true fungi'' or ''Eumycete ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
