Add spaces: Manysymptomsareoftencontrolledwithanti-inflammatorydrugssuchasaspirinorothernonsteroiddrugs(NSAIDs).

Answer: Many symptoms are often controlled with anti-inflammatory drugs such as aspirin or other nonsteroid drugs (NSAIDs).

Add spaces: Theeyeisfooledintoseeing3dimensional,physicalobjectseventhough,inreality,theyaretraditionalflatroadmarkings.

Answer: The eye is fooled into seeing 3 dimensional, physical objects even though, in reality, they are traditional flat road markings.

Add spaces: Unionistsrejectedthisbecausetheycouldnotmaintainamajorityinsuchanenlargedarea.

Answer:
Unionists rejected this because they could not maintain a majority in such an enlarged area.