Determining when death has occurred is difficult, as cessation of life functions is often not simultaneous across organ systems. Such determination, therefore, requires drawing precise conceptual boundaries between life and death. This is difficult, due to there being little consensus on how to define life. It is possible to define life in terms of consciousness. When consciousness ceases, an organism can be said to have died. One of the flaws in this approach is that there are many organisms that are alive but probably not conscious (for example, single-celled organisms). Another problem is in defining consciousness, which has many different definitions given by modern scientists, psychologists and philosophers. Additionally, many religious traditions, including Abrahamic and Dharmic traditions, hold that death does not (or may not) entail the end of consciousness. In certain cultures, death is more of a process than a single event. It implies a slow shift from one spiritual state to another. Other definitions for death focus on the character of cessation of organismic functioning and a human death which refers to irreversible loss of personhood. More specifically, death occurs when a living entity experiences irreversible cessation of all functioning. As it pertains to human life, death is an irreversible process where someone loses their existence as a person.Historically, attempts to define the exact moment of a humans death have been subjective, or imprecise.
Goltz-Gorlin
Besides its formal name, it is most commonly referred to as Goltz-Gorlin syndrome, after Robert Goltz and Robert Gorlin. Goltz and Gorlin worked together at the University of Minnesota  and are credited for describing the symptoms of the disorder in more detail than ever before and tracking its genetic trends. The name became popular during the second half of the 20th century. See also
List of cutaneous conditions
List of radiographic findings associated with cutaneous conditions

References
External links
http://www.orpha.net/consor/www/cgi-bin/OC_Exp.php?lng=EN&Expert=2092
GeneReview/NIH/UW entry on Focal dermal hypoplasia