How common is chronic illness?

How common is chronic illness

As with acute illness, the incidence of chronic illnesses varies greatly and there are on general rules. Some chronic conditions are very rare while others affect a large percentage of the pupulation. Some, such as asthma, are on the increase of growing pollution.
Increased life expectancy and better treatments for acute conditions also mean that more people are living long enough to develop slow-acting, long-term complaints. Accurate figures are difficult to establish, but current estimates put the incidence of chronic conditions as follows.
Very common (more than 1 in 20)
Allergies.
Astham.
High blood pressure.
Osteoarthritis.


Common (1 in 20 to 1 in 100)
Chronic bronchitis.
Diabetes.
Psoriasis.
Rheumatoid arthritis.

Fairly common (1 in 100 to 1 in 500)
Epilepsy.
Gout.
Schizophrenia.

Uncommon (1 in 500 to 1 in 2000)
Ankylosing spondylitis.
Down's syndrome.
Multiple sclerosis.
Parkinson's disease.
Ulcerative colitis.

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