List of products in the National Drug Code with proprietary name . Pimecrolimus is used to treat certain skin conditions such as eczema (atopic dermatitis) in people who should not use or have not responded to other eczema medications (e.g., topical steroids). Eczema is an allergic-type condition that causes red, irritated, and itchy skin. This drug works by changing the skin's defense (immune) system, thereby decreasing the allergic reaction that causes eczema. Pimecrolimus belongs to a class of drugs known as topical calcineurin inhibitors (TCIs). This medication is not recommended if you have a history of a certain rare genetic disorder (Netherton's syndrome). Also, this medication should not be used by anyone who has a weakened immune system (e.g., following an organ transplant).