Testosterone enanthate, sold under the brand names Delatestryl and Xyosted among others, is an androgen and anabolic steroid (AAS) medication which is used mainly in the treatment of low testosterone levels in men. It is also used in hormone therapy for transgender men. It is given by injection into muscle or subcutaneously usually once every one to four weeks.Side effects of testosterone enanthate include symptoms of masculinization like acne, increased hair growth, voice changes, and increased sexual desire. The drug is a synthetic androgen and anabolic steroid and hence is an agonist of the androgen receptor (AR), the biological target of androgens like testosterone and dihydrotestosterone (DHT). It has strong androgenic effects and moderate anabolic effects, which make it useful for producing masculinization and suitable for androgen replacement therapy. Testosterone enanthate is a testosterone ester and a long-lasting prodrug of testosterone in the body. Because of this, it is considered to be a natural and bioidentical form of testosterone.Testosterone enanthate was introduced for medical use in 1954. Along with testosterone cypionate, testosterone undecanoate, and testosterone propionate, it is one of the most widely used testosterone esters. In addition to its medical use, testosterone enanthate is used to improve physique and performance. The drug is a controlled substance in many countries and so non-medical use is generally illicit. Medical uses
Testosterone enanthate is used primarily in androgen replacement therapy. It is the most widely used form of testosterone in androgen replacement therapy.
Lima syndrome
An inversion of Stockholm syndrome, called Lima syndrome, has been proposed, in which abductors develop sympathy for their hostages. An abductor may also have second thoughts or experience empathy towards their victims.Lima syndrome was named after an abduction at the Japanese embassy in Lima, Peru, in 1996, when members of a militant movement took hostage hundreds of people attending a party at the official residence of Japans ambassador. Symptoms and behaviors
Victims of the formal definition of Stockholm syndrome develop "positive feelings toward their captors and sympathy for their causes and goals, and negative feelings toward the police or authorities". These symptoms often follow escaped victims back into their previously ordinary lives. Physical and psychological effects
Cognitive: confusion, blurred memory, delusion, and recurring flashbacks. Emotional: lack of feeling, fear, helplessness, hopelessness, aggression, depression, guilt, dependence on captor, and development of post-traumatic stress disorder (PTSD). Social: anxiety, irritability, cautiousness, and estrangement. Physical: increase in effects of pre-existing conditions; development of health conditions due to possible restriction from food, sleep, and exposure to outdoors. Ronald Fairbairns object relations theory of attachment to the abuser
Ronald Fairbairn wrote a complete psychoanalytic model in a series of papers (1940, 1941, 1943, 1944)  which are collected in his 1952 text Psychoanalytic Studies of the Personality. His model explains the surprising psychological reality that abused children become deeply attached to their abusers. He saw that lack of love, chronic indifference and abuse led to a counter-intuitive emotional attachment to the very parent who was abusing them.