Characteristic lesion of scabies is -
Burrow
Fissure
Vesicle
Papule
SCABIES:-Caused by Sarcoptes scabiei var hominis.Clinical features:Itching- generalised, worse at night.this is due to delayed type 4 hypersensitivity reaction. Classic lesion: Burrow-Thread like wavy tunnel in stratum corneum.They appear as serpiginous or S shaped greyish,thread like elevations with a vesicle at one end indicating the presence of mite.seen at interdigital web, feet areola,scrotum. Burrows are pathognomic of scabies. iadvl textbook of dermatology page429
Fungal infections, Scabies, Pediculosis