Life Cycle. The life cycle of a louse begins as an egg, also called a nit. The nit is a 1mm whitish-yellow speck that attaches itself firmly to an individual hair strand close to the scalp.
Pityriasis rosea is a relatively common skin condition that causes a temporary skin rash of raised, red scaly patches on the body.The rash can be very itchy and usually clears within 2-12 weeks, but on rare occasions can last up to 5 months.ityriasis rosea is a relatively common skin condition that causes a temporary skin rash of raised, red scaly patches on the body.
Atypical pityriasis rosea may be diagnosed when the rash has features such as: 1  Atypical morphology, eg papules (small bumps), vesicles (blisters), urticated plaques (weal-like), purpura (bruising), target lesions (erythema multiforme-like) 2  Large size or confluent plaques.