Sex development problems refer to conditions in which a person's chromosomes, gonads, or anatomy do not align with the traditional definitions of male or female. These conditions are also known as intersex conditions, or disorders of sexual development (DSDs). Sex development problems can be caused by chromosomal abnormalities, genetic mutations, environmental factors, or a combination of all three. Chromosomal abnormalities may include an extra X or Y chromosome, or a missing or extra copy of a chromosome. Genetic mutations can result in a person having more or fewer than the usual number of sex chromosomes. Environmental factors such as exposure to certain hormones before birth can lead to sex development problems. In some cases, sex development problems may not be apparent until puberty. Symptoms may include abnormal genitalia, incomplete or delayed puberty, infertility, or ambiguous physical characteristics. A diagnosis of an intersex condition is typically made when a person does not fit into the traditional definitions of male or female. Treatment for sex development problems depends on the underlying cause and the severity of the symptoms. Treatment options may include hormone therapy, surgery, or psychosocial support. In some cases, individuals may live with the condition and not require treatment. Sex development problems are very complex and can be emotionally difficult for individuals and their families. It is important to provide support and understanding to those affected by these conditions.