Bipolar disorder: the causes

Bipolar disorder affects both men and women, regardless of their social class. Its causes are multifactorial, with a strong endogenous component, ie genetic and biological.

Bipolar disorder occurs in young adults with a starting age between 15 and 40 years. More precisely, the average start age is around 20 years old. The causes of bipolar disorder would be largely genetic and biological, without ruling out the environmental causes, themselves involved in gene expression.

The relatively uniform prevalence in different cultures, the family tendency and the earlier onset of age than in unipolar depression (mania-less depression or hypomania) suggest a strong genetic component. If one of the parents has bipolar disorder, the risk of one of the children being affected is about 20%. If the father and mother have bipolar disorder, this risk rises to 50-60%. Thus, the existence of a history of bipolar disorder in the family goes in the direction of a genetic susceptibility to the disease.

However, like all psychiatric pathologies, environmental causes play a role in the onset of the disease. The existence of traumatic events or emotional deficiencies in the family or personal past, especially in early childhood, can promote the development of bipolar disorder.

These environmental causes would have an impact, only if a field of genetic susceptibility would be present. According to epigenetic theory, the existence of environmental factors (affective, infectious, inflammatory, etc.) would influence the expression of certain genes, and promote the development of bipolar disorder.

You want to react, to give your testimony or to ask a question? Appointment in our FORUMS Psychology, Analysis and Psychotherapy or A doctor answers you !

Read also :

> Borderline presidency
> Overcoming your phobias and anxiety disorders

Popular Posts

Category Diseases, Next Article

Anxiety: can we heal? - Diseases

Anxiety: can we heal?

In some cases, a background of anxiety persists, even if the crises are spaced out or disappear. What is certain is that it is possible to learn to manage your anxiety attacks and even to prevent them! What is important is not to trivialize these crises. They are the sign of a malaise, sometimes profound, that must be treated
Read More
Mastosis: treatments - Diseases

Mastosis: treatments

When the breasts are very tight and painful before the menses, a progestogen hormone treatment can be proposed: it allows to fight against the effects of estrogen and to limit the extension of the mastosis, and at the same time to relieve the pain premenstrual phenomena associates. These treatments are prescribed on 10, 15 or 20 days per cycle
Read More
Hypotension: sources and notes - Diseases

Hypotension: sources and notes

Author: Charles Brumauld Expert consultant: Dr. Dany-Michel Marcadet, cardiologist. Sources: > Brief knowledge loss in adults: diagnostic and therapeutic management of syncope, recommendations on good behavior, HAS, 2008. > Haensch, CA, H. Lerch, et al. (2009). Cardiac denervation is an independent disease of orthostatic hypotension and odd heart rate variability in Parkinson's disease
Read More