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 ten to twenty years. It is caused by the growth of a fungus, and pathologically is the reaction of the tissues to the growth.The fungus was named after a microscopic structure termed "achorion" (a term not used in modern science), seen in scrapings of infected skin, which consists of slender, mycelial threads matted together, bearing oval, nucleated fungal substrate-arthroconidia either free or jointed. This structure is currently called "scutula." The fungus itself is now called Trichophyton schoenleinii.
Congenital malaria is an extremely rare condition which occurs due to transplacental transmission of maternal infection.Clinical features include fever, irritability, feeding problems, anemia, hepatosplenomegaly and jaundice. Clinical features commence only after three weeks due to the protective effect of transplacentally transmitted antibodies. References
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(P37.3) Congenital falciparum malaria
(P37.4) Other congenital malaria