Two things often confused
People often use “subdermal” for anything that sits under the skin, and microdermals tend to get lumped in with implants. They are related but not the same. A subdermal implant is a shaped object buried fully beneath the skin so that only its outline shows. A microdermal anchor is different: a small base sits under the skin, and a post or threaded opening reaches through to the surface, where decorative tops can be attached. This article is general information, not medical advice, and gives no instructions.
How a microdermal anchor is built
A typical anchor has two parts. The base, sometimes called a foundation, is a small plate or disc often with holes in it, positioned in the deeper layer of the skin. A step or post connects it to the surface, where a removable top, such as a gem or small ball, is fitted. The holes in the base are intended to allow tissue to grow through and around it, which is meant to hold it in place.
Because the anchor is a single point rather than a pair of entry and exit holes, it creates a look similar to a surface stud. That is the appeal for some people. The structure also explains the problems, because the object depends on the surrounding tissue holding on to it.
How it differs from a surface piercing and from an implant
- Compared with a standard piercing: a piercing makes a channel through tissue, with jewelry passing through. An anchor has one opening, with the main part buried.
- Compared with a subdermal implant: an implant is buried completely and the skin closes over it. An anchor has a permanent opening at the surface, so the skin barrier stays breached for as long as it is worn.
- Compared with a surface piercing: both can shift, but an anchor is held by a buried base rather than a bar passing through tissue, so the issues overlap with those seen in surface piercings and migration generally.
That permanent opening is important. It means the area has a long-term infection pathway and needs continued care and attention, not only during initial healing.
Common complications
Complications are frequent enough that they are widely discussed by professionals.
- Migration. The anchor may drift, tilt or move from its original position.
- Rejection or extrusion. The body can push the anchor outward until the base becomes visible or the whole piece falls out.
- Infection. Redness, swelling, heat, pain, discharge or fever call for medical advice, not guesswork.
- Overgrowth. Tissue can grow over the top, which is uncomfortable and tricky.
- Snagging and trauma. Because the top protrudes, catching on clothing, hair or towels can pull on the anchor and damage tissue, and this is part of why placement matters.
- Scarring and discoloration. Removal commonly leaves a mark, and in some people the site scars more noticeably, including raised scars.
- Allergic reactions, including metal sensitivity, which are discussed under nickel sensitivity.
Why migration or rejection occurs
Several factors push the body toward expelling an anchor.
- Location. Areas with movement, stretch, friction or pressure, such as joints, the hands or places that rub on clothes, put steady strain on the tissue holding the base.
- Depth. If the base sits too shallow, the tissue over it may thin and break down; too deep and the post may not sit right at the surface. Understanding skin layers helps explain why depth is so critical.
- Material and fit. The metal, its surface finish and how it fits the tissue influence how the body responds. The topic of implant grade materials is a general reference point, but any claim a material is perfect for everyone should be doubted.
- Individual biology. Healing speed, immune response, skin thickness and conditions such as eczema play a role.
- Care and trauma. Repeated knocking, pulling, over-cleaning or poor aftercare can all contribute.
Even with skilled work, some anchors fail. This is part of the nature of the procedure, not necessarily a sign of negligence, which is why anyone considering it should expect that they might lose the piece.
Professional involvement
The placement is a skin-breaking procedure into deeper tissue and should be done only by trained, licensed professionals working in a clean, sterile environment, with appropriate rules for the region. Do-it-yourself attempts, kits and unlicensed work carry greater risk of infection, nerve damage and lasting scars. Checking credentials and asking about what happens if the anchor needs removal are sensible parts of an initial consultation. Because rules vary, it is also worth finding out whether the procedure is regulated where you live.
Removal
Removal is not simply a matter of unscrewing the top. The base lies in tissue and often needs to be removed by a professional, sometimes by a doctor, and may leave a small scar or depression. If a site looks infected, or the anchor seems to be coming out, seek professional medical advice quickly instead of trying to deal with it at home.
A realistic summary
Microdermal anchors are a more complex kind of body jewelry than they first appear. Their appeal is the clean, single-point look, but the permanent opening, the dependence on tissue to hold the base and the chance of migration make them a modification with a meaningful failure rate and no guarantees. A doctor or licensed professional is the right person to advise about risks for your own body.