- Are experiencing at least 1 of the following symptoms associated with fat changes due to HIV: 1) increase in belt or waist size; 2) increase in size of back of neck; 3) increase in bra, shirt, or blouse size to fit increasing breast size; 4) fat increase in other areas of the body; 5) loss of facial fat; 6) loss of fat in arms or legs; 7) loss of fat in buttocks.