**9. Conclusions**

The origin of LS is probably multifactorial, in which a synergy occurs between mechanical and electrical environmental factors, common in modern buildings. Currently, there are two main hypotheses (perhaps also acting together): electromagnetic (produced by computer equipment, electrical appliances, and wiring) and electrostatic (produced by continuous friction between chairs and synthetic clothing, leading to the accumulation of electrostatic charges which are subsequently released through contact of the thighs with grounded furniture, such as the desk). However, in many single reported cases or in small series of patients there was no office exposure, and the lesions could be reasonably attributed to other diverse traumatic factors, which at least are thought to be contributors. Besides, an individual electrosensitivity, in which many other environmental factors participate (humidity, desk materials, sitting posture, and synthetic clothing, among others) may play a determinant role in the development of LS.

#### **Conflict of interest**

The authors declare no conflicts of interest.

*Lipoatrophia Semicircularis DOI: http://dx.doi.org/10.5772/intechopen.105920*
