Character entity references can also have the format &name; where name is a case-sensitive alphanumeric string. For example, Î» can also be encoded as &lambda; in an HTML document. The character entity references &lt; , &gt; , &quot; and &amp; are predefined in HTML and SGML, because, ,  and & are already used to delimit markup. This notably does not include XML's &apos; (') entity.
Lack of facial expression. Lack of facial expression: Introduction. An absence of expression on the face is medically called flat affect. In many cases, the face mirrors the underlying emotions, and the person has limited emotions or various emotional or psychological disorders.
Loss of sensation in the facial area is a characteristic symptom of face numbness. It may be accompanied by a tingling sensation on the face and lips. Alongside, there may also be other symptoms like swelling, loss of control over the facial muscles, burning sensation, etc. Numbness may be felt on one or both the sides of the face. These can be symptoms of mild or complete paralysis of the facial region. The condition may be temporary or permanent.