Contraindications Of Microneedle Therapy in Sensitive Skin And Inflammatory Diseases

https://en.wikipedia.org/wiki/Microneedles

Microneedle therapy is not suitable for everyone. Under certain physiological or pathological conditions, microneedling may not only fail to deliver the expected benefits but may actually exacerbate existing problems or induce new complications. Identifying these contraindications and high-risk groups is the first step in formulating responsible treatment plans.

Active skin infections are absolute contraindications for microneedling. Whether bacterial (folliculitis, impetigo), viral (herpes simplex, herpes zoster), or fungal (tinea corporis, candidiasis), the puncturing action of microneedles can drive pathogens from the surface into deeper tissues, leading to the spread and worsening of infection. Clinically, there have been cases where patients undergoing microneedling during an active herpes labialis outbreak experienced viral dissemination across the entire face along the puncture channels. Therefore, any active infection must be fully resolved before considering treatment.

Immunologically mediated dermatoses, such as psoriasis and lichen planus, also warrant cautious handling. Patients with these conditions have skin in an abnormally activated immune state; the trauma induced by microneedling may trigger the Koebner phenomenon-the appearance of new lesions at the site of injury. Psoriasis patients may develop typical scaly erythema around puncture sites post-treatment. Unless performed under strict specialist supervision for specific therapeutic purposes, routine microneedling should be avoided for such patients.

Patients with a history of keloids or hypertrophic scarring constitute another high-risk group. Their fibroblasts react abnormally aggressively to trauma; even the micro-injuries caused by microneedling may induce excessive collagen deposition, forming raised scars. While microneedling is indeed used to treat scars, this is done under strictly controlled depth and density parameters by experienced physicians. For confirmed keloid formers, cosmetic microneedling is not recommended.

Pregnant and lactating women should also exercise prudence. Although no direct evidence currently indicates harm to the fetus, the impact of anesthetic creams or certain ingredients in post-care products on mother and baby remains unclear. Adhering to the principle of safety first, most professional guidelines advise avoiding unnecessary microneedling during this period.

Patients on long-term anticoagulant therapy or with coagulation disorders face bleeding risks. Medications such as aspirin, warfarin, and clopidogrel affect platelet function or coagulation factor synthesis. Microneedling in these individuals may result in uncontrolled oozing or extensive ecchymosis. If treatment is necessary, it should be conducted cautiously after evaluating the risks of medication cessation with a physician.

Respecting contraindications is not a denial of the technology but a reverence for life. Every treatment plan should be carefully weighed on the scales of "benefit" versus "risk," with the safety of the patient always being the ultimate priority.