What is meant by 'symptoms' of a disease? What do they indicate?

What do you man by symptoms of a disease?

What are the symptoms of tikka disease?

What do you mean by symptoms of a disease ? Give example.

What is nephrosis? What is the cause of it? What are the symptoms of the disease? What the principle of diet given to a patient of nephrosis.

What are the symptoms of disease pellagra?

What are the symptoms of kwashiorkor disease?