In contact with a new source of queratina, the dermatfito removes cutcula and earns for. This invasion occurs of the surface until the parts deepest of the one for, stopping its progression to not finding more queratina. Finally we have the comprometimento of the nails, that if makes secondarily to the penetration of the dermatfito in the crnea layer, in the distal portion of the ungueal stream bed. This penetration if makes of form not required by law in the previously sick nail, favored for traumas. The invasion starts preferential in the distal part in direction to the proximal part.

This characteristic can assist in the differentiation of onicomicoses for dermatfitos, that first compromise the free edge of the nails, when compared with onicomicoses caused by Candida sp that they compromise the proximal ungueal fold first. Clinical manifestations the clinical aspects of the injuries dermatofticas sufficiently are varied and result of the combination of destruction of queratina associated with an inflammatory reply, more or less intense, in the dependence of the parasitic binomial/host. The clinical variation therefore is associated the three factors: involved species of dermatfito in the infectious process, acometido anatomical small farm and imunolgico status of the host. Two forms of clinical classification of dermatofitoses exist: One follows the English chain that calls all the infections of ' ' tinea' ' , associate to another word, that points the anatomical small farm of the injury the injuries is called of Tinea asks for to Tinea capitis Tinea unguium (onicomicoses) Tinea cruris Tinea corporis Tinea barbae Already another clinical classification follows the French chain and classifies dermatofitoses in: You had or Tineas: Any dermatoftica injury that acometa the cabeludo leather and/or region of the beard and mustache. Epidermofitases: found dermatifticas injuries in the skin glabra. Onicomicoses dermatofticas: injuries in nails. Transmission the dermatfitos can be transmitted of man the man, of the animal to the man, or vice? it turns, of animal the animal and the ground to the man and animal for the direct contact or through epidrmicas scales and for the infectados ones.