However, a desire to deceive medical personnel in order to gain treatment and attention is more important in Münchausens than in self-harm. Psychological factors
Self-harm is frequently described as an experience of depersonalization or a dissociative state. Abuse during childhood is accepted as a primary social factor increasing the incidence of self-harm, as is bereavement, and troubled parental or partner relationships. Factors such as war, poverty, unemployment, and substance abuse may also contribute. Other predictors of self-harm and suicidal behavior include feelings of entrapment, defeat, lack of belonging, and perceiving oneself as a burden along with having an impulsive personality and/or less effective social problem-solving skills. The onset of puberty, including the onset of sexual activity, often correlates with the onset of self-harm; this is because the pubertal period is associated with neurodevelopmental vulnerability and comes with an increased risk of emotional disorders and risk-taking behaviors. Transgender adolescents are significantly more likely to engage in self-harm than their cisgender peers. This can be attributed to distress caused by gender dysphoria as well as increased likelihoods of experiencing bullying, abuse, and mental illness. Genetics
The most distinctive characteristic of the rare genetic condition, Lesch–Nyhan syndrome, is self-harm and may include biting and head-banging. Genetics may contribute to the risk of developing other psychological conditions, such as anxiety or depression, which could in turn lead to self-harming behavior. However, the link between genetics and self-harm in otherwise healthy patients is largely inconclusive. Drugs and alcohol
Substance misuse, dependence and withdrawal are associated with self-harm.
Antibiotics are not without risks and prophylactic broad antibiotic coverage is not recommended. Prognosis
Prognosis is highly variable. Spontaneous remission is common. Complete cure can be obtained with proper antibiotic treatments to kill the causative bacteria, such as tetracycline, doxycycline, or erythromycin. Prognosis is more favorable with early treatment. Bacterial superinfections may complicate course. Death can occur from bowel obstruction or perforation, and follicular conjunctivitis due to autoinoculation of infectious discharge can occur. Long-term complications
Genital elephantiasis or esthiomene, which is the dramatic end-result of lymphatic obstruction, which may occur because of the strictures themselves, or fistulas. This is usually seen in females, may ulcerate and often occurs 1–20 years after primary infection. Fistulas of, but not limited to, the penis, urethra, vagina, uterus, or rectum. Also, surrounding edema often occurs. Rectal or other strictures and scarring. Systemic spread may occur, possible results are arthritis, pneumonitis, hepatitis, or perihepatitis. Notes
References
External links

Sexually transmitted infections (BMJ publishing)