rheumatoid arthritis definition by Wordo

Noun

A

chronic

and

progressive

disease

in

which

the

immune system

attacks

the

joints

.

It

is

characterised

by

pain

,

inflammation

and

swelling

of

the

joints

,

stiffness

,

weakness

,

loss

of

mobility

and

deformity

.

Tissues

throughout

the

body

can

be

affected

,

including

the

skin

,

blood vessels

,

heart

,

lungs

,

and

muscles

.