why does parris suggest calling in reverend hale

Parris is nervous during the opening scene of The Crucible because his daughter is paralyzed. As the town's resident minister during the late 1600s, there is great fear that the daughter may be possessed. This would be a great problem for his reputation. In fact, his career could be ruined. Although it would be great to have a doctor just fix an illness, Reverend Hale of Beverly is a known expert on these issues. Calling him in can confirm that she isn't possessed. If by chance she is, then this Reverend Hale should be able to exorcize the demon possessing her because he already apparently healed another woman of this type of ailment.