List Some Reasons Why Arm Liposuction Could Be Painful?

Liposuction of the upper arm fat pads can give great results. As with all areas, tenderness, swelling, stiffness and numbness do occur and the timing for resolution varies between patients. In general, most patients will be able to resume fairly normal activity within several days (3 to 7). But most are still tender and stiff for at least a few weeks. Numbness is normal after liposuction, as the nerve endings are stretched during the procedure. There can be some small areas of permanent numbness, but most resolve within weeks to months. I do have all my patients wear a compression garment that is like a small shirt (hooks in the front) and is 3/4 length. They wear it for 24 hours for 2 weeks and then I really like to try to get them to keep wearing it for up to 4-6 weeks. Massage after liposuction can help the symptoms you describe. I would ask your doctor. Thanks for the question.

Today we all think we can find the answers to everything on-line, and there is a lot you can find. However sometimes the best thing is to speak with your doctor. He or she can best reassure you.

Having said that, liposuction is superficial, and stiffness is probably related to swelling. Nerves can be stretched by the blunt cannula used to do liposuction, and that can take months to recover.

Regards.

Arm liposuction can be painful for several reasons, including:
1. Invasive Procedure: Liposuction is a surgical procedure that involves making small incisions and using a cannula to suction out fat. The invasive nature of the procedure can cause pain during and after.2. Tissue Trauma: The process of breaking up and suctioning out fat can cause trauma to the surrounding tissues, leading to discomfort.3. Nerve Sensitivity: The arms contain nerves that transmit sensations, and the manipulation of tissues during liposuction can stimulate these nerves, causing pain.4. Bruising and Swelling: Post-surgery, bruising and swelling are common side effects of liposuction. This can contribute to pain as the body heals.5. Anesthesia Wear-Off: After the surgery, as the anesthesia wears off, patients may experience pain as sensation returns to the treated areas.
It’s important to note that pain tolerance varies among individuals, and the overall experience can also depend on factors like the surgeon’s technique and the patient’s general health. Always consult with an experienced professional for guidance.

From the very limited information you have posted very hard to advise to cause and effect relationships. Best to obtain in person a second opinion. 

It is common to have liposuction be sold as a "noninvasive" process. That is completely false.

To answer your question directly, Arm Liposuction may be painful because it involves having a hollow steel tube hooked to high vacuum being pushed and pulled many times through the fat under the skin along the whole circumference of your arm. While this process is done with precision in a sterile environment it is still a traumatic process which results in swelling.