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 versicolor. Pityriasis versicolor is a fungal infection of the skin and is caused by a type of yeast that naturally lives on your skin. It's also sometimes called tinea versicolor. When the yeast grows out of control, the skin disease, which appears as a rash, is the result.This picture shows pityriasis versicolor on the chest of a child.t's also sometimes called tinea versicolor. When the yeast grows out of control, the skin disease, which appears as a rash, is the result. This picture shows pityriasis versicolor on the chest of a child.