<unk>  is a colloquial term to describe the behavior of individuals who use the Internet to gather information on health or healthcare, for themselves or people in their care.  The market research company Harris Interactive Inc., which makes use of the word in various studies, states that<unk>  literally means "online concern about health."
Cyberchondria
Syndesmosis
Haff disease
Aguecheek disease
Acrochordon
Vulvitis
Linitis plastica
Balanitis circinata