As he mentioned towards the end of his passage, one of the differences he states is, “1. Signs are what a doctor sees, symptoms are what a patient experiences.” if i might add that when he means what a doctor “sees” also means what is smelt, felt, tasted(in rare cases of diagnosis), hear, and sees or the 5 senses. This is the difference that he is talking about when differentiating between a sign and a symptom. A simpler way to word this is that it is all observed by perspective. A fever can be felt and seen by a doctor making it a sign but it can also be a symptom do to the fact that the patient also experiences the fever. So you are right, but technically it is not a special case because there are also other symptoms/signs that fall under this category.
This is where it all started. The oral form was originally developed back in 1956 by Dr. John Ziegler and Ciba labs. This was the first steroid used by American athletes and was the only steroid anyone in this country talked about until the late 1970’s, by which time it had earned the nickname, “the breakfast of champions;” a sly wink at 1971 Kurt Vonnegut satire about depravity in the modern age—that and the fact several pro-football clubs greeted their players each morning with breakfast and those little pink pills. Methandrostenolone is by far the most popular steroid used by athletes. Ciba labs discontinued the brand name Dianabol in USA during the 1990’s because the FDA decided the only people using this drug were athletes. Dianabol pictures: