Carbon stain
Encyclopedia
Carbon stains are a skin condition characterized by a discoloration of the skin
from embedded carbon
, usually occurring in children from careless use of firearms or firecracker
s, or from puncture wound by a pencil
, which may leave a permanent black mark of embedded graphite, easily mistaken for metastatic melanoma
.
Skin
-Dermis:The dermis is the layer of skin beneath the epidermis that consists of connective tissue and cushions the body from stress and strain. The dermis is tightly connected to the epidermis by a basement membrane. It also harbors many Mechanoreceptors that provide the sense of touch and heat...
from embedded carbon
Carbon
Carbon is the chemical element with symbol C and atomic number 6. As a member of group 14 on the periodic table, it is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds...
, usually occurring in children from careless use of firearms or firecracker
Firecracker
A firecracker is a small explosive device primarily designed to produce a large amount of noise, especially in the form of a loud bang; any visual effect is incidental to this goal. They have fuses, and are wrapped in a heavy paper casing to contain the explosive compound...
s, or from puncture wound by a pencil
Pencil
A pencil is a writing implement or art medium usually constructed of a narrow, solid pigment core inside a protective casing. The case prevents the core from breaking, and also from marking the user’s hand during use....
, which may leave a permanent black mark of embedded graphite, easily mistaken for metastatic melanoma
Melanoma
Melanoma is a malignant tumor of melanocytes. Melanocytes are cells that produce the dark pigment, melanin, which is responsible for the color of skin. They predominantly occur in skin, but are also found in other parts of the body, including the bowel and the eye...
.