Variant of normal: Constitutional growth delay and adolescence is a variant of normal growth rather than a disorder. Typically there is a delay in the onset of the pubertal growth spurt. Catch-up growth, onset of puberty, and pubertal growth spurt occur later than average, and usually results in normal adult stature and sexual development.
Answered 7/4/2014
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See your doctor: Male pubertal changes can take several years. Many boys hit their peak height by 17, but some may continue to grow into their early 20's. Puberty does involve hair growth, but also changes in the penis, testicles, and body mass. If you are concerned, see your doctor.
Answered 8/6/2014
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