The first symptom is a small sore that develops into a blister. The blister then develops into a skin ulcer with a black area in the center. The sore, blister and ulcer do not hurt.
Gastrointestinal: The first symptoms are nausea, loss of appetite, bloody diarrhoea, and fever, followed by bad stomach pain.
Inhalation: The first symptoms of inhalation type of anthrax are cold and flu like symptoms and can include a sore throat, mild fever and muscle aches. Later symptoms include cough, chest discomfort, shortness of breath, tiredness and muscle aches. (Caution: If a person has cold or flu symptoms, do not assume that they are suffering from inhalation anthrax.)