You ask a very interesting question--the regulation of height and body type is a very complicated combination of genetics and hormonal regulation and you should discuss your concerns with your physician. In general, your final adult height is typically predicted based upon growth curves during childhood. If you were consistently at the 95th percentile for your age throughout childhood and adolescence, then it is likely you will be at the 95th percentile for adult height as well. Although there are pharmacologic hormones (growth hormone) that can be given to individuals who are markedly short, there is not really an equivalent to slow growth in adolescents who are tall.
However, there are some conditions which result in inappropriate levels of growth hormone in adults (one in particular is called acromegaly and results when the pituitary is no longer appropriately regulated). This can result in growth not only in height, but in head circumference and hand size in adults. If you are concerned about your height, either as an adolescent or young adult who is not yet done growing, or as an adult who may have noticed some changes in your height or frame, the best thing to do is see your physician right away to discuss your concerns in more detail.