1, jewelry dermatitis.
Some women wearing rings and necklaces can cause contact dermatitis of the neck and fingers, with itchy skin, erythema, desquamation and papules, and even asthma or systemic urticaria in severe cases.
2. Local infection.
When piercing ear holes, tongue holes or nostrils, due to lax local disinfection or improper nursing afterwards, infection may be caused, and organ damage may also be caused by friction and hanging of jewelry, resulting in secondary infection.
3, causing deformity.
The most common is finger or toe ring deformity. Some people wear the ring for a long time, even if they don't take it off at night, it will cause local blood supply deficiency, cause tissue hyperplasia at the lower part of the ring or local persistent infection, and eventually lead to finger or toe deformity.
Extended data:
Limit of harmful elements
nickel
1, which is used to puncture the ear or any other part of human body. The products used in the process of puncture wound healing should release less than 0.2 μ g/(cm2 week) of nickel.
2、? Products that come into contact with human skin for a long time, such as:
-Earrings;
Necklaces, bracelets, bracelets, anklets and rings;
—— Case, bracelet and clasp;
-Snaps, buckles, rivets, zippers and metal labels (if not nailed to clothes).
The release of nickel from the long-term contact parts of these products with the skin should be less than 0.5 μ g/(cm2 week).
3. If the surface of the product specified in "3" is coated, the coating shall ensure that the nickel release of the parts in long-term contact with the skin is less than 0.5 μ g/(cm2/week) within two years of normal use.
References:
(Baidu Encyclopedia: Provisions on the Limit of Harmful Elements in Jewelry)