By MARGARET MEEHAN

Something was crawling underneath Helen’s skin. Or wasn’t? Or was? She leaned in closer to her bathroom mirror and squinted at the S-shaped bump, red and angry around the border, with an edge of self-disgust. It had been there for two days. First, tucked timidly underneath her eyebrow, easily mistaken for an irritated hair follicle, which, no big deal, but now, if her eyes weren’t playing tricks, it had scooted its way smack-dab in the center of her forehead, spotlighted by the offensive bulb overhead. Could it have been something she ate? That rubbery shrimp in the food-court lo mein? Or an unwitting encounter with some poisonous leaf in Punta Cana last week? When she stumbled into that bush after one too many coladas? She thought of texting Bob to see if any curious growths had appeared on his pallid body but decided she’d rather physically suffer than emotionally exhaust herself in a forced flirtatious exchange that would no doubt end with a dinner invitation she’d say yes to, even though the idea repulsed her.