"M—m," droned the Doctor. "You've no idea of the cause for this increase in the malignancy of the attacks?"
"No sir," said Nick, after a barely perceptible hesitation.
"You don't think the cause could be in any way connected with, let us say, the emotional disturbances attending your acquaintance with Pat here?"
"No, sir," said the youth flatly.
"All right," said Horker. "Let that angle go for the present. Are there any after effects from these spells?"
"Yes. There's always a splitting headache." He closed his eyes. "I have one of them now."
"Localized?"
"Sir?"
"Is the pain in any particular region? Forehead, temples, eyes, or so forth?"
"No. Just a nasty headache."