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.
The most common symptom associated with the lesions of pityriasis rosea is pruritus or itching, which affects about 75% of patients, with 25% reporting severe itching. Many patients find that athletic activity or hot weather makes the itching worse.ityriasis rosea is a common benign skin disease, or exanthem, that was first described by a French physician named Camille Gibert in 1860. It is classified as a papulosquamous disorder, which means that its lesions are marked by small raised areas (papules) as well as scaly areas.