The plain case is, she is tormented by an evil spirit

Wed 10 Mar 1742: I was with a gentlewoman whose distemper has puzzled the most eminent physicians for many years; it being such as they could neither give any rational account of nor find any remedy for. The plain case is, she is tormented by an evil spirit, following her day and night. Yea, try all your drugs over and over; but at length it will plainly appear that ‘this kind goeth not out, but by prayer and fasting.’