"Hot spots" are also known as "acute moist pyoderma". What that means is that they are rapidly appearing, oozing, skin infections. This is just a description of a symptom, sort of like saying "your dog has scabs".
www.vetinfo.com/dencyclopedia/dehotspot.html
Answer: I think that the wound you are describing is most likely an area of acute moist pyoderma, which is often referred to as a "hot spot". These can occur very rapidly and progress to weepy, scabby wounds so quickly, in some cases, that they are frightening.
www.vetinfo.com/dhotspots.html
Acute moist dermatitis, also known as hot spots, are localized, moist, reddened bacterial infections of the skin. A hot spot starts because something irritates the skin. The body's response is either to itch or become inflamed. ... Pyoderma is a bacterial infection of the skin. Pyoderma can be divided into surface...
www.petplace.com/dogs/acute-moist-dermatitis-hot-spots/... www.petplace.com/dogs/acute-moist-dermatitis-hot-spots/page1.aspx
Some dogs are prone to hot spots, also known as acute moist pyoderma. A dog with a hot spot skin infection is prone to an oozing discharge, skin redness and pain. ... Technically known as acute moist pyoderma, a dog's hot spots can be very difficult to treat and heal. These often chronic canine skin infections can affect...
pet-diseases.suite101.com/article.cfm/treatment_for_hot... pet-diseases.suite101.com/article.cfm/treatment_for_hot_spots_skin_infections
Also known as acute moist dermatitis, hot spots are usually a disease of dogs with long hair or those with dense undercoats. It is often caused by a local allergic reaction to a specific antigen. Insect bites, especially from fleas, are often found to be the cause.
www.peteducation.com/article.cfm?c=2+2111&aid=447
Warmth and moisture are usually contributing factors in this type of inflammatory skin disorder, also referred to as moist Eczema, Acute Moist Dermatitis or Acute Moist Pyoderma.
www.bellaonline.com/articles/art33647.asp
"Hot spots" are also known as "acute moist pyoderma" which means that they are rapidly appearing, oozing skin infections that either itch or create an inflammatory response in that area.
www.cybercanine.com/hotspot.htm
Large hot spot near ear ... Hot spots can enlarge rapidly, so early diagnosis – before your pet’s hot spot involves a large area of the body -- is important. Both dogs and cats can get hot spots, although dogs with dense ... Home » Hot Spots (Acute Moist Dermatitis, Pyotraumatic Dermatitis, Superficial Pyoderma;
www.veterinarypartner.com/Content.plx?P=A&A=2714
Malassezia loves moist, greasy areas of the skin,  and is often most obvious on the throat, in ears, armpits, and crotch areas.  The skin often becomes blackened and odorous.  ... Hot Spots (Acute Moist Dermatitis, Eczema, Pyotraumatic Dermatitis); ... Skin Fold Dermatitis, and Impetigo (superficial pustular pyoderma);
animalpetdoctor.homestead.com/bacterialskin.html
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