Short answer: who should not use a terahertz device? Our product pages say the devices are not recommended for people with a pacemaker or another electronic implant, during pregnancy, or over open wounds.[8]
Who should not use a terahertz device?
- Not recommended: a pacemaker or other electronic implant, pregnancy, and use over open wounds.[8]
- Ask your doctor first (general advice): a medical condition you are unsure about; reduced feeling in the skin, for example with diabetes, because heat can burn without you noticing; a skin infection, or a swollen, hot or red area; and metal implants.
- Children: ask the paediatrician first.
- Older family members: check with their doctor and stay with them during use.
- Tell us before a session. Our team talks through whether a session suits you before you start, and you can stop at any time.[7]
- Follow the manual for your model: the limits for your device are the ones that apply.[4]
Heat on numb skin is the one we stress most: a case report in the British Journal of General Practice described two people with diabetic nerve damage who suffered deep burns from hot water bottles, so we ask anyone with numb skin to speak to their doctor first.[9]
When to see a doctor
See a doctor before any session or purchase if any of the above applies to you or someone you are buying for.
Sources
- Prife iTeraCare, FAQ
- Prife iTeraCare, How it works
- Prife iTeraCare, Incredible Classic 3.0
- British Journal of General Practice (2005), Hot water bottles and diabetic patients, a cautionary tale
Written by the Prife iTeraCare team and last reviewed on 12 October 2026. This is general information, not medical advice, and it does not replace your doctor or physiotherapist. A session is a wellness experience, not a medical treatment.
Book a free session and see iTeraCare for yourself at our Anna Nagar centre.