inherited disorder

NOUN
18 LETTERS · STARTS WITH I

inherited disorder is a valid 18-letter word worth 23 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
I1N1H4E1R1I1T1E1D2D2I1S1O1R1D2E1R1
1 + 1 + 4 + 1 + 1 + 1 + 1 + 1 + 2 + 0 + 2 + 1 + 1 + 1 + 1 + 2 + 1 + 1 =23 PTS
DOUBLE WORD → 46TRIPLE WORD → 69
MEANING

What does inherited disorder mean?