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Side effects

The most common serious injury reported from the needles of acupuncture has been accidental puncture of the lung. This results in a partial collapse of the lung called pneumothorax. The most common infection reported from acupuncture treatments is viral hepatitis, a potentially serious infection of the liver. Other side effects include bacterial infections locally at the site of needle insertion in the skin and elsewhere in the body. Generally, side effects seem to relate to poor hygiene and training of the acupuncturist.

Needles

Acupuncture needles are typically made of stainless steel wire. They are usually disposable, but reusable needles are sometimes used as well, though they must be sterilized between uses. Needles vary in length between 13 to 130 millimetres (0.51 to 5.1 in), with shorter needles used near the face and eyes, and longer needles in more fleshy areas; needle diameters vary from 0.16 mm (0.006 in) to 0.46 mm (0.018 in), with thicker needles used on more robust patients. Thinner needles may be flexible and require tubes for insertion. The tip of the needle should not be made too sharp to prevent breakage, although blunt needles cause more pain.

Apart from the usual filiform needle, there are also other needle types which can be utilized, such as three-edged needles and the Nine Ancient Needles. Japanese acupuncturists use extremely thin needles that are used superficially, sometimes without penetrating the skin, and surrounded by a guide tube (a technique adopted in China and the West). Korean acupuncture uses copper needles and has a greater focus on the hand.

Feeling about acupuncture

You may feel slight pressure when a needle goes in. Most people find that it doesn't hurt. The area may tingle, feel numb, itch, or be a little sore. Providers believe that this is a sign that the energy flow, or chi, has been accessed.

After the needle is placed, your provider may roll the needle slightly back and forth. Or he or she may use heat or electrical current on the needle.