Hello, Thank you for your question. Swelling can be seen both in the area treated as well as the body parts distal (away from) the treated area, such as the feet when legs are treated and hands when arms are treated. The inflammation and swelling of the treated area makes it difficult for blood and lymph fluid in the feet and hands to return to the heart. The swelling can be reduced with the use of compression garments and elevating the hands/arms or legs/feet when resting or sitting down. It is difficult to know what you mean by “a lot.” Symptoms such as numbness, tingling, or pain should be addressed by a health professional. Best wishes, Dr. Moein