Electrical Stimulation for Wound Healing: An Adjunct, Not a DIY Treatment

Quick answer: Electrical stimulation is being studied as an adjunct for selected chronic wounds, but it is not a home substitute for assessment, pressure relief, circulation management, infection control or an appropriate dressing plan. Never place a consumer TENS unit on or around an open wound unless a qualified clinician directs it.

Why is electrical stimulation being studied?

Chronic wound healing can be affected by pressure, poor perfusion, neuropathy, oedema, infection, repeated trauma, nutrition and systemic illness. Researchers have investigated whether controlled electrical stimulation might influence local perfusion, tissue oxygenation, sensation or wound dimensions. These are specialist protocols using defined devices and monitoring, not a licence to improvise with household equipment.

What did the completed Baylor trial measure?

The completed ClinicalTrials.gov study NCT03821675, sponsored by Baylor College of Medicine, enrolled 38 participants in a randomised, double-masked comparison of active and sham electrical-stimulation devices. The protocol used the device for one hour daily over four weeks. Primary outcomes were skin perfusion and wound size at four weeks.

The registry posts outcome tables for 16 active and 17 sham participants in the four-week comparison. It reports group measurements for perfusion and wound size, but no inferential statistical comparison is displayed in the registry outcome table. The small analysed groups and specialist setting mean the record should be read as early clinical evidence, not proof that electrical stimulation improves every wound.

What must come before an adjunctive device?

• Cause: identify pressure, venous disease, arterial compromise, diabetes-related risk, trauma or another driver.
• Perfusion: assess whether the tissue has enough blood supply before compression, debridement or advanced modalities.
• Pressure and load: offload feet and redistribute pressure where indicated.
• Moisture balance: choose a dressing for the actual wound depth, tissue and exudate—not by trend.
• Infection and inflammation: assess increasing pain, odour, erythema, heat, swelling, purulence, friable tissue or systemic illness in clinical context.
• Whole-person factors: review glucose control, nutrition, mobility, medicines, smoking and the feasibility of the care plan.

Why should a consumer TENS unit not be used on a wound?

Consumer devices may have different waveforms, electrodes, placement instructions and contraindications from research equipment. Broken skin also changes the safety problem. Incorrect placement can cause skin injury, pain, interference with implanted devices or delayed assessment of a deteriorating wound. Device-based care belongs inside a documented clinical plan.

When is urgent review needed?

Seek prompt medical assessment for rapidly spreading redness, new severe pain, fever, pus, crepitus, black or dusky tissue, sudden swelling, uncontrolled bleeding, exposed deeper structures, or a wound that worsens despite care. People with diabetes, poor circulation, immunosuppression or loss of sensation should have a lower threshold for review.

What is the balanced takeaway?

Electrical stimulation is a legitimate research and specialist-care topic, but it remains an adjunct. A correct diagnosis, cause-directed care and reliable monitoring carry more weight than adding technology without a full wound assessment.

This is general information, not medical advice — consult your doctor. Do not change a wound plan or use an electrical device on broken skin without advice from your treating clinician.

For wound-care education and practical essentials, visit EMIS+.