Yes - scabies spreads by direct, prolonged skin-to-skin contact, per the CDC: households, sexual partners, nursing homes.
A handshake will not do it, but weeks can pass between infestation and symptoms, so people share it unknowingly. The rule that prevents the boomerang: everyone in the household and all close contacts treat at the same time, plus hot-wash or bag bedding and clothing. Itching persisting weeks after treatment is the allergy fading, not failure.
What to do
Common questions
Is scabies contagious?
Yes - scabies is contagious, though it spreads differently than most people assume. Per the CDC, human scabies spreads most commonly by direct, prolonged skin-to-skin contact with a person who has it - this is not a handshake infection; it takes sustained contact, which is why it moves through households, between sexual partners, and through facilities like nursing homes. The mite itself is the cause: a human itch mite burrows into skin, and the intense itching and pimple-like rash are largely your allergic reaction to it - which is also why symptoms can take weeks to appear after a first infestation, long enough to share it unknowingly. The treatment rule that prevents the endless boomerang: everyone in the household and all close contacts get treated at the same time, even without symptoms, with the prescribed permethrin cream applied as directed, plus hot washing or bagging of bedding and clothing from the days before treatment. Itching can persist for weeks after successful treatment - that is the allergy fading, not treatment failing. Pymander, a free AI doctor available 24/7 by text, can help you plan the household round.