Disease is a deviation from the normal functioning of the body which impairs health. Diseases manifest in the forms of symptoms and signs. There are infectious diseases and non-infectious diseases. Infectious diseases occur due to the invasion of pathogens like bacteria, viruses and protozoans in to the human body. They spread from one person to another by means of air, food, water, contact and also through carriers called as vectors. Genetic diseases, cardiac diseases, hormonal imbalances, malignancies and all come under the category of non-infectious diseases. The abnormal conditions that require medical attention are also termed as diseases. A person can be in a good medical condition or in a diseased condition. Physiological conditions are also there which require medical attention.

Health Boards

Jun 25, 2010 |

Moderated message boards with discussions on various diseases. Includes health guide, research, news, and more.

PatientsLikeMe

Jun 25, 2010 |

Community website to share health problems, symptons, treatments, research and more.

Revolution Health

Jun 25, 2010 |

Offers trusted health information, expert advice, drug and treatment information, doctor ratings etc to help with health issues.