barber's Instruments, hair brushes and combs

barber's Instruments, hair brushes and combs. There is patchy hair loss with broken hair. Hair Infected by Microsporon fluoresces under Wood light The fungus gets foothold in the stratum corneum and grows in it. later it enters the hair folicle. penetrates the hair cortex and flourishes Inside. The weakened hair then breaks giving rise to a bald patch Types (a) Black dot patch (b) Grey patch with scaling. (c) Inflammatory type Certain fungi causa deep, boggy swelling called a kerion. (d) Favus - Circular yellow cups made up of a fungal mat (scutula) surround the hair follicle it occurs also on the nails and body. Patients have a 'mousy' odour. Tinea capitis should diferentiated from Impetigo. alopecia areate. seborrhoeic dermatetis Tinea barbae - Is usually found in adult males. it is acquired from a barbers Instrument or from animals The lesions are similar to tinea infections else where Types (a) Non-Inflammatory type - spreading peripherally and clearing in the centre. (b) Inflammatory type - This is a deeper type wich pustules and kerion formation a should be differentiated from sycosis barbae Tinea corporis - Ringworm of the glabrous skin can occur anywhere on the body. it is caused most oftan by tricophyton speclea. The lesion starts as a papule which spreads ring-like perlpneralry with central clearing. The lesions are usually circinate with an active border consisting of vesicles and sealing. D. D. - (a) Tubsrculoid leprosy where minimal Infiltration in the penriphery mimics the active border of tinea circinata (b) intertrigo with scabies with lesions In flexural and moist sites