NHD Review

The natural history of disease (NHD) is a

• model

• concept

• term

• graphic

The model of NHD allows to

• predict the behaviour of a disease, before, during and after the appearance of symptoms and signs

• predict the behaviour of a disease before, the appearance of symptoms and signs

• predict the behaviour of a disease after the appearance of symptoms and signs

• eradicate the appearance of a given disease

The first period of the NHD

• Pre Pathogenic

• Pathogenic

• Resolution

• Primary prevention

The second period of the NHD

• Pre Pathogenic

• Pathogenic

• Resolution

• Primary prevention

The aim of studying diseases is that we may stop them during

• Pre Pathogenic

• Pathogenic

• Secondary prevention

• Primary prevention

Think about an example for secondary prevention (treatment and diagnosis)

Is it true that: The sooner we are diagnosed and start the treatment, we decrease the possibilities of complications?

• Yes

• No

Think of an example where this model has already improved our lives