Electrotherapy: TENS, Ultrasound and Diadynamic Currents 2026

Key Facts

– Medical use of electrical currents and waves — precisely calibrated, non-invasive, no pharmaceuticals – Most common forms — TENS (pain relief), ultrasound (deep tissue heating), diadynamic currents (muscle stimulation), iontophoresis (medication delivery through skin) – Available at most spa resorts — integrated into comprehensive treatment programmes – Amplified by preceding heat therapy — thermal bath or moor pack relaxes tissues, enhancing penetration – German-speaking medical care at all recommended spa resorts – No prepayment — pay at the hotel on arrival

Electrotherapy at a Glance

Feature	Details
Definition	Therapeutic use of electrical currents, electromagnetic fields and ultrasound waves
Key Spas	Available at most resorts — particularly Piešťany, Karlovy Vary, Budapest, Druskininkai, Abano Terme, Rimske Terme
Main Forms	TENS, ultrasound, diadynamic currents, iontophoresis, galvanic baths
Duration per Session	10–20 minutes per modality
Frequency	Daily or every second day, as prescribed
Kurdauer	14–21 days recommended

What Is Electrotherapy?

electrotherapy encompasses a family of treatments that use externally applied electrical or wave energy to produce a physiological effect. The forms differ in the type of energy used and the condition they treat:

TENS (Transcutaneous Electrical Nerve Stimulation) — low-voltage electrical pulses are delivered through electrodes placed on the skin over the painful area. The pulses stimulate sensory nerves, which send signals to the spinal cord that “close the gate” to pain transmission — the gate control theory of pain. TENS also triggers the release of endorphins, the body’s own opioid-like painkillers. The effect is immediate pain relief without medication. TENS is used for chronic back pain, arthrosis, neuropathic pain and post-operative pain.

Ultrasound therapy — high-frequency sound waves (1–3 MHz) are delivered through a handheld probe moved over the skin. The sound waves penetrate 3–5 centimetres into the tissue, generating microscopic vibration and heat at the cellular level. This deep micro-massage increases blood flow, reduces muscle spasm, breaks down scar tissue adhesions, and accelerates healing. Ultrasound is particularly effective for tendonitis, bursitis, scar tissue mobilisation and joint capsule inflammation.

diadynamic currents — low-frequency currents (50–100 Hz) that are modulated in specific patterns to produce different effects: pain relief (the “gate” mechanism), muscle stimulation (for atrophied muscles), and improved circulation. Diadynamic therapy is used for muscle re-education after injury or surgery, chronic pain syndromes and peripheral circulatory disorders.

Iontophoresis — a low-level direct current drives ionised medication molecules through the skin into the underlying tissue. The current itself has a mild anti-inflammatory effect, and the medication — typically an anti-inflammatory or analgesic — is delivered directly to the target site, bypassing the digestive system. Iontophoresis is used for localised joint and tendon inflammation.

Four-chamber galvanic baths — the patient immerses arms and legs in four separate water baths through which a mild galvanic current is passed. The current improves peripheral circulation and has a general sedative effect. Used for peripheral arterial disease, Raynaud’s syndrome and general circulatory weakness.

Which Spas Offer Electrotherapy?

Spa	Country	Electrotherapy Specialities	★
Piešťany	Slovakia	Full electrotherapy suite — TENS, ultrasound, diadynamic, iontophoresis, integrated with Mirror Pool biofeedback	★★★
Druskininkai	Lithuania	Complete electrotherapy programme as part of 8-category multidisciplinary treatment	★★
Karlovy Vary	Czech Republic	TENS, ultrasound, iontophoresis — integrated with drinking cure and thermal baths	★★
Budapest	Hungary	Electrotherapy in spa hotels — combined with thermal pool physiotherapy	★★
Abano Terme	Italy	Electrotherapy after fango — deep heat enhances electrical penetration	★★
Rimske Terme	Slovenia	TENS, ultrasound, magnetotherapy — focused on post-operative orthopaedic rehabilitation	★★

Who Can Benefit from Electrotherapy?

Condition	Electrotherapy Form	Mechanism
Chronic Back Pain	TENS, diadynamic currents	Gate control — pain signals blocked at spinal cord level
Arthrosis Pain	TENS, ultrasound	TENS for pain, ultrasound for deep joint heating
Tendonitis, Bursitis	Ultrasound	Deep micro-massage breaks down adhesions, increases blood flow
Post-Operative Pain	TENS	Non-pharmaceutical pain relief, no drug interactions
Muscle Atrophy	Diadynamic currents	Electrical stimulation prevents disuse atrophy
Joint Inflammation	Iontophoresis	Anti-inflammatory medication delivered directly to the joint
Peripheral Circulatory Disorders	Galvanic baths, diadynamic	Gentle electrical stimulation improves microcirculation

Not suitable for: patients with pacemakers or other implanted electronic devices (absolute contraindication), pregnancy (abdomen and lower back), active malignancies in the treatment area, acute infections, and epilepsy (TENS on the head or neck).

A Typical Spa Day with Electrotherapy

Time	Activity
07:00	Rise — light stretching
08:00	Breakfast
09:00	Thermal bath or moor pack — 20 minutes (prepares tissues)
10:00	Electrotherapy session — TENS, ultrasound or diadynamic, 10–20 minutes
10:30	Rest period — the analgesic or anti-inflammatory effect builds
11:00	Physiotherapy — active mobilisation (pain-free window after electrotherapy)
12:30	Lunch
14:00	Massage or second electrotherapy session — if prescribed
15:30	Walk in the spa park
17:30	Dinner
19:00	Evening walk — gentle, restorative

Frequently Asked Questions