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. Pityriasis rosea is a common, usually mild, skin rash that often begins with a large, scaly, pink patch of skin on the chest or back. The patch is usually followed by additional pink patches of skin. There is an itching of skin lesions and redness or inflammation of the skin. rash indicates an abnormal change in skin colour or texture. Some skin rashes may be caused by a virus, such as chicken pox, shingles or measles. Rashes are often caused by skin irritation, which can have many causes, such as an allergic reaction, or sting from a plant such as a stinging nettle.