The signs and symptoms of an<unk>  depend on the type of disease. Some signs of<unk>  affect the whole body generally, such as fatigue, loss of appetite, weight loss, fevers, night sweats, chills, aches and pains. Others are specific to individual body parts, such as skin rashes, coughing, or a runny nose. In certain cases,<unk> s diseases may be asymptomatic for much or even all of their course in a given host. In the latter case, the disease may only be defined as a "disease" (which by definition means an illness) in hosts who secondarily become ill after contact with an asymptomatic carrier. An<unk>  is not synonymous with an<unk> s disease, as some<unk> s do not cause illness in a host. Bacterial or viral As bacterial and viral<unk> s can both cause the same kinds of symptoms, it can be difficult to distinguish which is the cause of a specific<unk> . Distinguishing the<unk>  is important, since viral<unk> s cannot be cured by antibiotics whereas bacterial<unk> s can. +Comparison of viral and bacterial<unk>  Characteristic Viral<unk>  Bacterial<unk>  Typical symptoms In general, viral<unk> s are systemic. This means they involve many different parts of the body or more than<unk>  body system at the same time; i.e. a runny nose, sinus congestion, cough, body aches etc. They can be local at times as in viral conjunctivitis or "pink eye" and herpes. Only a few viral<unk> s are painful, like herpes. The pain of viral<unk> s is often described as itchy or burning. The classic symptoms of a bacterial<unk>  are localized redness, heat, swelling and pain.<unk>  of the hallmarks of a bacterial<unk>  is local pain, pain that is in a specific part of the body. For example, if a cut occurs and is<unk> ected with bacteria, pain occurs at the site of the<unk> . Bacterial throat pain is often characterized by more pain on<unk>  side of the throat. An ear<unk>  is more likely to be diagnosed as bacterial if the pain occurs in only<unk>  ear. A cut that produces pus and<unk> lky-colored liquid is most likely<unk> ected. Cause Pathogenic viruses Pathogenic bacteria
Infection
Sudden infant death syndrome
Disease
Methanol toxicity
Neurotoxicity
Trauma
Side effect
Malignancy