What is a condition found mostly in boys between the ages of 10 and 17 that produces motion restrictions at the hip and also produces knee pain?

exposure to hazardous carcinogens and toxic substances can cause breathing problems, such as copd and various types of cancer. it also increases the risk of heart attacks and strokes and has serious (but no less unattractive) side effects, such as aging, yellow teeth, a terrible smell and damage to the vocal cords.