Consumers are increasingly turning to OTCs to treat their conditions, including both acute, episodic conditions like the common cold and such chronic conditions as frequent pain and allergy. However, the extent to which OTCs are used varies by condition, according to an online survey of more than 900 AccentHealth viewers conducted in September. Headache sufferers reported using OTC medications most often (89%), while sufferers of certain digestive disorders use OTCs less often (53%).