State of being well and using every power the individual possesses to the fullest extent.- (nightingale)
Wellness- is an integrated method of functioning oriented towards maximizing the potentials of an individual within the environment where he is functioning. - Dunn.
Well being- a subjective perception of balance, harmony, and vitality. - (Leddy and pepper)
Illness-
Disturbance on normal functioning.
Can be acute or chronic
Acute- sudden onset and can be easily recovered from
Chronic- longer duration
Disease
Alteration in body functions resulting in q reduction of capacities or shortening of normal life span.