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 rosea is a temporary skin condition that's common in teens and young adults. It's a pink or gray, scaly skin rash that can last for 4 to 8 weeks, and sometimes months.The rash usually starts with one big patch on the chest, abdomen, thighs, or back.ityriasis rosea is a temporary skin condition that's common in teens and young adults. It's a pink or gray, scaly skin rash that can last for 4 to 8 weeks, and sometimes months.