• Gender includes the cognitive, emotional, and social schemes associated with being male or female.
• Gender Identity refers to one’s sense of being male or female.
• Sex is either of the two main categories (male and female) into which humans and many other living things are divided on the basis of their reproductive functions.
• Intersex - People may present with both male and female genitalia.
• Gender dysphoria (formerly gender identity disorder) is defined by strong, persistent feelings of identification with the opposite gender and discomfort with one's own assigned sex that results in significant distress or impairment. People with gender dysphoria desire to live as members of the opposite sex and often dress and use mannerisms associated with the other gender. For instance, a person identified as a boy may feel and act like a girl. This incongruence causes significant distress, and this distress is not limited to a desire to simply be of the other gender but may include a desire to be of an alternative gender.