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.
Although it may look unpleasant and the patches are sometimes itchy, pityriasis versicolor is harmless. You may still want to see your GP, as it usually only improves with treatment. Your GP can normally diagnose pityriasis versicolor by examining your skin.ityriasis versicolor, sometimes called tinea versicolor, is a common condition that causes small patches of skin to become scaly and discoloured. The patches may be darker or lighter than your normal skin colour, or may be red or pink. They tend to develop gradually and may join up to form larger patches over time.