In my experience at this time there is no steadfast guarantee that someone infected with HIV will suffer from wasting. It is common, absolutely but with the meds and more so the nutrition information combined with support from outside and inside the medical field for the use of AAS in the treatment of wasting it is something that can be for the most part can be stemmed by early and swift action.
One of the more prevalent aspects of body composition problems asssociated with HIV/AIDS is Lipodistrophy from some of the medications and possibly the virus itself. This manifests in different ways but the most obvious being the facial wasting (that skeletal look, sunken cheekbones,) the hard distended barrel belly which is a redistribution of bodyfat from the extremities to the midsection (fatty deposits actually surround the internal organs,) and sometimes upper back and neck area. That vascularity in the arms and legs with the skin taking on a rough but thin look.
This is the "Look" for many of us with HIV/AIDS and is the telltale sign but not for all. Myself, I refused to take any AIDS drugs until I was diagnosed with AIDS related Cancer 4 years ago and by doing so I avoided some of the "Med Mistakes" that were part of the late 80's and 90's where dosing and combinations were far from an exact science. There are solutions though. Some of them are pretty hardcore but a lot of it has to do with diet, getting enough protein, keeping your fats down and doing cardio combined with resistance training.
If I may ask, what is your interest? Maybe I can help you with some suggestions if your asking for yourself or a friend.
Be Safe, Oliver