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.
Pityriasis alba, a common skin disorder in children and young adults. It is characterized by the presence of ill-defined, scaly, faintly erythematous patches.he duration of pityriasis alba varies from 1 month to 10 years, with most cases resolving over a period of several months to a year. Diagnosis is made clinically, and treatment consists of skin care and education of a young patientâs parents about the benign nature of the disorder.