List various causes and signs and symptoms of diseases.

Explanation

Symptoms are the manifestations of the presence of disease(s). Symptoms indicate that there is some abnormality in the body. For instance, we have headache or cough or loose motions or wound with pus. All these are symptoms of some disease(s). Headache may occur due to day.s heavy work or problem of eye sight or blood pressure or it may occur due to number of diseases e.g., malaria, typhoid, jaundice. Symptoms do not give exact cause of the disease. Signs provide information about the presence of particular disease. These are distinct for different diseases.