Difference between TENS and EMS electro stimulation?

Transcutaneous Electrical Nerve Stimulation (TENS) and Electrical Muscle Stimulation (EMS) are described by product manufacturers (and wikipedia!) as two separate things. However, I have been unable to find a concise/complete description what is actually different, such as 1) voltage, 2) current, 3) frequency, 4) wave form, 5) location applied on body, ... Can somebody clarify?

Great question! I think it's answerable as an overview, but please know this is only the tip of the iceberg.* Summary : Yes, we have deficits of certain blood products in certain locations at certain times that affect patient care. However, a small percentage of blood product does expire unused (because it wasn't the right product [see background] in the right place at the right time). A little background Donated blood is not usually transfused into a patient as whole blood. Instead, it's broken down into several components which are transfused in different clinical scenarios. The issues of storage and...

As you read, both TENS and EMS employ electrotherapy to treat acute and chronic pain, but the methodology differs. (Note that some of the references are to NMES, which stands for Neuromuscular Electrical Stimulation, and is considered synonymous with EMS.) Transcutaneous Electrical Nerve Stimulators (TENS) use electrotherapy to stimulate the nerves and active therapeutic healing. Electronic Muscle Stimulators (EMS), on the other hand, sends electric impulses that cause muscle contraction . EMS units are used to prevent atrophied muscles, for retraining muscles (e.g. in partial paralysis), to increase range of motion, and other uses. Some of the technology is described...

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