So, basically, withholding information is not the same thing as lying, but depending on the situation, you will have to decide whether it is better to withhold the information or not.
HCH may refer to: Hampton Court House, an independent school in Surrey, UK. Hexachlorocyclohexane, a group of chemical compounds. Holmes Chapel railway station (National Rail station code), in Cheshire, England.
A: Hydrochlorothiazide (HCTZ) is a thiazide diuretic (water pill) that is used to treat edema (fluid retention) from various causes such as congestive heart failure, cirrhosis of the liver, kidney disorders, or medication-induced (from estrogen or steroids).