bed·rid·den 
(bĕdrĭd′n) also bed·rid (-rĭd′)
(bĕdrĭd′n) also bed·rid (-rĭd′)adj.
Confined to bed because of illness or infirmity.
[Middle English bedreden, from Old English bedrida : bed, bed; see BED + rida, rider (from rīdan, to ride; see RIDE).]