*morphology of each rash
*distribution
*sites on body
==leprosy==
**highly hydrophobic
**''M. ulcerans'' itself is not pathogenetic
*WHO treatment category
**I lesions<5cm - 8 weeks antibiotics
**II lesions 5-15cm - 4 weeks antibiotics -> surgery -> 4 weeks
**III lesions >15cm
==Lesishmaniasis==
*''Leischmania'' spp. > 20 species
**intracellular protozoa
*transmitted by sandfly
*3 clinical types
**cutaneous
**mucocutaneous
**visceral (Kala-Azar)
==Onchoceriasis==
*''Onchocera volvulus''
*transmitted by blackfly
==Lyphmatic filariasis==
*''Wuchereria bancrofti'', ''Brugia malayi'', ''Brugia timori''
==Yaws==
*''Treponema pallidum'' subsp. ''pertenue''
*direct contact transmission
*just one dose of azithromycin is effective
==Mycetoma==
*syndrome, not a single etiology
*bacterial
**''Actionomadura madurae'', ''Streptomyces somaliensis'', ''Actinomadura pelletieri'', ''Nocardia'' spp.
*fungal
**''Madurella mycetomatis'', etc.
**black dots are seen on lesions, clusters of fungi
*Txs differ depending on
==Scabies==
*''Sarcoptes scabiei var. hominis''
*ivermectin
==Tungiasis (sand flea)==
*''Tunga penetrans''
**only female tunga invades human skin producing a large ovary
==Guinea worm==
*almost eliminated
**human cases only in 4 countries
**still exists as zoonosis
*''Dracunculus medinensis''