TENS Unit Frequency Calculator
Enter your pain details to get optimal TENS unit frequency, pulse width, and electrode placement recommendations.
What frequency should I use for acute vs chronic pain?
Acute pain (recent injury <3 months): HIGH frequency 80-150 Hz for immediate relief via gate control. Chronic pain (3+ months): LOW frequency 2-10 Hz stimulates endorphin release (takes 30-45 min for effect). Mixed: Burst mode (2 bursts/sec) for best of both worlds.
How long should a TENS session last?
Acute pain: 20-30 minutes, 3-4x/day OK. Chronic pain: 30-60 minutes, 2-3x/day. Muscle stim (EMS): 15-20 minutes. Never exceed 60 min/session. Take 1-hour break between sessions. Skin irritation occurs >3 hours continuous use.
Is higher intensity always better for pain relief?
No! "Strong but comfortable" is ideal. Too weak = ineffective. Too strong = muscle fatigue, increased pain, skin irritation. You should feel a strong tingling/vibration but NOT pain or muscle contraction (unless using EMS mode). Adjust every 10 minutes as nerves adapt.
Can TENS help with specific conditions?
Excellent: Lower back pain (80% respond), Arthritis (knee/hip), Menstrual cramps, Labor pain (60-70% reduction). Moderate: Fibromyalgia, Neuropathy (diabetic), Post-surgical pain. Poor: Headache/migraine, Internal organ pain, Numb areas (nerves damaged).