Body Piercing - Nipple Piercing

A nipple piercing is a piercing, centered usually at the base of the nipple. A nipple piercing typically takes 3-6 months to fully heal.
The nipple is fleshy enough to pierce securely behind plenty of skin to prevent rejection. However, if the jewelry gauge is too thin or the piercing isn't deep enough to begin with, there is a risk of rejection. Metal allergies could cause it to reject. Problems with infection and/or too much tugging and pulling on it could also cause it to reject.
Nipple piercing and breastfeeding.
There is a common question among women who consider nipple piercings, and that question is how it may affect breastfeeding. There is no evidence that proper nipple piercings cause any complications with lactation. However, it is recommended that good care is taken to prevent infection by using a piercing professional and good body piercing aftercare. Frequent re-piercings can also damage the nipple and cause complications. It is also recommended that the piercing be healed before breastfeeding. Most body piercing professionals will refuse to pierce a pregnant woman for this reason, and because piercing causes unnecessary stress on the body that could potentially complicate a pregnancy.
Several complications have been noted involving breastfeeding with a piercing present, so it is recommended to remove nipple jewelry before nursing.
Several women who do not remove nipple jewelry before nursing observe the following problems:
Poor latch
Babies frequently coming on and off the breast
Slurping
Gagging
Milk leaking from the baby's mouth.
It is also a potential choking hazard for the baby. As the baby sucks, the jewelry could come loose and lodge in the throat. The baby's gums and tongue as well as the soft and hard palate could be injured by the jewelry.

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Nose piercing is the piercing of the skin or cartilage which forms any part of the nose, normally for the purpose of wearing jewelry. Among the different varieties of nose piercings, the nostril piercing is the most common, and for many years, was second only to ear piercing as the most common body piercing in North America. However, because navel piercing has risen in popularity since the 1990s, the nostril piercing no longer holds this ranking.
Nostril piercing

Nostril piercing
Nostril piercing is a body piercing practice often associated with India. In India the outside of the left nostril is the preferred position of the piercing as this is supposed to make childbirth easier. This is because Ayurvedic medicine associates this location with the female reproductive organs [1]. Nostril piercing has become popular amongst the industrialised nations, as have other forms of body piercing. Celebrities such as Sinéad O'Connor, Madonna, Christina Aguilera, Nicole Richie and Tupac Shakur have had their nostrils pierced.
It was first performed in the Middle East about 4,000 years ago [citation needed]. A nose ring was one of the gifts given to Rebekah recorded in Genesis 24:47 [2]. From there it spread out to India and parts of Asia. India pierced beautiful girls with this jewelery to mark beauty, and also social standing in the 16th century. Later on the piercing was introduced by the hippie culture in the 1960s and '70s. Afterwards punks and subsequent youth cultures in the '80s and '90s adopted this sort of piercing.
Nose piercing is still popular in India and Bangladesh.
Today, nostril piercing is popular in the U.S., UK, Canada, and Italy with piercings being performed on either the left or right nostril. Both men and women have nostril piercings, although they are much more common among women. Occasionally, people will have multiple nostril piercings, in either or both nostrils.
Nasal septum piercing

Septum piercing

A nasal septum piercing is less common than nostril piercings. The nasal septum is the cartilaginous dividing wall between the nostrils. Generally, the cartilage itself is not pierced, but rather the small gap between the cartilage and the bottom of the nose, typically at a gauge no smaller than 14ga (1.6mm). The nose has many nerves running through it and as a result, nose piercings can be painful, although it varies by individual.
There are four types of jewelry generally worn in a septum piercing. Captive bead rings (CBRs) are rings that close with a bead in the centre. Circular Barbells (as shown in the picture) have two beads which screw on. Additionally, one can wear a "tusk" which is a straight or shaped piece of material which is generally tapered on either end. Another option is a septum retainer, which can be flipped up to hide the piercing.
This type of Nose piercing is particularly easy to hide for example if you work in a place with a dress code, a triangular barbell may be worn which makes it possible to turn the jewelry up into the nose thus concealing it.
Septum piercing was popular among certain Native American peoples in history; the Shawnee leaders Tecumseh and Tenskwatawa, for example, had such piercings. Septum piercing is sometimes performed on bulls as part of the process to break them for the farm. This process uses a hinged brass ring with sharpened ends to facilitate insertion. Afterwards, the open ends are held together by means of a screw.

Animal husbandry
A forgotten but once widespread connotation of the term "nose ring" was the stainless steel or brass ring installed in the septum of a bull of the bovine species. Bull cattle are powerful and dangerous animals which, if uncontrolled, can kill or severely injure their handlers. The nasal area of a bull is sensitive, however. The nose ring enables the handler to control a powerful and aggressive animal with minimal risk of injury or disruption by exerting stress on one of the most sensitive parts of the animal. Utilizing a specially designed staff or pole locked or hooked to the ring, the handler can force a powerful and aggressive bull to move from pen to pen in the barn or out to pasture. A bull may be led by a rope tied through the ring, although it is recommended that a halter also be used so as not to rely unduly on the nose ring for control. Alternately, a rope could be attached to the halter through the ring with a firm knot and the other end of the rope attached to a wagon or tractor which provides both protection and tractive power to lead the animal with safety. (See C. Dalton, Noseringing a Bull, at http://www.lifestyleblock.co.nz/articles/cattle/20_noseringing_bull.html). A variant of this technique includes a rope or cord tied between the nose ring and the testicles at the base of the scrotum, and is known as the Geier Hitch.

Bridge piercing
Yet another nose piercing is the bridge piercing. This piercing is a surface piercing through the small flap of skin at the top of the nose, between the eyes. Barbell-style body jewellery is the most common jewellery worn in this piercing. This particular piercing is fairly rare.