I started minoxidil 2 months ago and it is working miricles on the back of my head. The problem is that it is now hair growing on my back and the hair on on my arms and legs is getting thicker, much thicker. I am growing hair all over my body, even the chest is hairier. When I looked at my arms, there is probably no new hair, but the hairs on my arms are definately thicker. Could I be imagining this? Is this possible?
Yes, this is a known, but rare side effect of minoxidil with topical applications. It was a finding that was more consistent when the drug was given in a pill form for the treatment of high blood pressure (that was its original use). I suspect that you are absorbing considerable amounts of minoxidil into your body through the skin. Skin applications of medications are not new. Testosterone is administered as a patch and so are many other medications. The skin is an excellent route for bringing drugs into the body. Your dilemma is simply to accept the new body hair along with the benefits in the crown of your head, or stop the drug and wait for it to back to your original, normal state.
The key to buying any medication over the internet is to determine if the source (manufacturer) is a known producer of quality drugs and the chain from manufacturer to you is unbroken by folks who can substitute fake drugs into that chain. Now that there is freedom to sell finasteride in the U.S. market in the 5mg dose (the U.S. Patent that restricted this has expired), there are drugs appearing on the market which have FDA clearance. If there is really FDA clearance, then the drug is most probably what the label says it is. There have been, however, reports that a black market in drugs is appearing in the U.S. and even pills purchased by U.S. pharmacies are being substituted with fake drugs that have little or no drug in them. The pharmacies have a responsibility to guarantee the authentic nature of such purchases so when you talk about guarantees, then there is a sort of purchase guarantee covered by the pharmacy’s license to do business in the states where they operate. When you purchase drugs over the internet, there is no way to guarantee the source or the quality and even fake pills that look like the originals pills may not be real. This is a problem not only for drugs like Propecia/finasteride, but for drugs like Viagra which may look like the real thing and are only sugar in reality. This is a growing problem and there seems to be great profits for those without any sense of honor and who chase the almighty dollar. Expensive cancer drugs or AIDS drugs are falling victim to this process as well. As I’ve said before, it is a ‘buyer beware’ business so to help our patients, we purchase Propecia directly from Merck and sell it ‘at cost’ to our patients as a convenience to them. 
Any cut on the skin will produce a scar. The problem is in how to minimize the scar. Each time the donor area is harvested with a strip technique, the risk of scarring increases. To put it simply, there are two factors for scar formation. The first factor is dependant on the individual and how his/her body naturally heals. The second factor is dependant on the techniques that the surgeon uses to close a wound. I have seen bad surgical techniques that resulted in great, cosmetically acceptable scars, because the patient’s body healed exceptionally well, despite what the surgeon did. An individual’s ability to heal and form scars is difficult to predict and not completely understood, because it is determined at a genetic level, impacting the way your body lays down the healing infrastructure of a wound.
Women with a high forehead sometimes seek hairline lowering procedures. We have had experience doing these procedures, but it is a more extensive and involved surgery, a sort of reversed brow lift surgery. Hair transplants are also used to lower the hairline and the results are just as comparable. There are obvious pros and cons to both procedures and its utility is patient specific. The actual hairline lowering procedure is virtually instantaneous, not having to wait out the normal transplant growth cycle.
Bring in the hairs and have a good doctor analyze it and perform a pull test for the hair that is on your head. Getting your hair mapped out for 
Get metrics (put numbers to it) on the degree and location of the miniaturization by mapping your scalp hair and establishing a pattern for predictive purposes. Propecia is the correct medication for controlling this and you need to compare the degree of miniaturization over time. Diffuse Patterned Alopecia (DPA) can lead to full balding in the pattern of thinning, but it also may not. If the degree of miniaturization is stable, then it is a good scenario — if it is worsening, then where is it getting worse? If it is better, pat yourself on the back for being very smart and thinking carefully through your Master Plan.