The early symptoms of Addison's disease may include brown areas of gingiva, a vermillion border on the lips, upper lip, a yellowish palate, and a yellow tongue.
Bacteria. Infections with the urinary system, TB, and strep throat are all brought on by these one-celled organisms. Viruses. From the cold virus to AIDS, viruses, which are even tinier, are the main cause of many diseases.
Infectious diseases, deficient diseases, hereditary diseases (covering both genetic disorders and quasi inheritable diseases), and physiologic diseases are the four primary categories of disease. Other categories of sickness exist as well, such as communicable and non-communicable diseases.
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