Stretch marks typically appear as bands of parallel lines on your skin. These lines are a different color and texture than your normal skin, and they range from purple to bright pink to light gray. When you touch stretch marks with your fingers, you might feel a slight ridge or indentation on your skin. Sometimes, stretch marks feel itchy or sore. These lines commonly appear during or after pregnancy or after a sudden change in your weight. They also tend to occur in adolescents who are rapidly growing.
During 2003–2004 A total of 3,775 confirmed cases of severe S. pyogenes infection were identified over 2 years, 3.33/100,000 population, substantially more than previously estimated. Skin/soft tissue infections were the most common manifestation (42%), followed by respiratory tract infections (17%). Injection drug use was identified as a risk factor for 20% of case-patients. One in 5 infected case-patients died within 7 days of diagnosis; the highest mortality rate was for cases of necrotizing fasciitis (34%).
The most invasive therapies for stretch marks involve physician-administered laser surgery. Improvement in stretch marks with laser therapy is accomplished by wounding the scarred skin and hoping that the newly healed skin will have a more normal, cosmetically acceptable appearance. Medical reports of Nd:YAG laser, radiofrequency devices, and fractional photothermolysis have shown some degree of improvement in stretch mark appearance but not resolution.