Definitions of disorder:

• noun:   a disturbance of the peace or of public order
• noun:   condition in which there is a disturbance of normal functioning

  Example: "The doctor prescribed some medicine for the disorder"

• noun:   a condition in which things are not in their expected places

  Example: "The files are in complete disorder"

• verb:   bring disorder to
• verb:   disturb in mind or make uneasy or cause to be worried or alarmed