Hello and thank you for your question! Skin irregularities can happen after liposuction. There are some that get better and some that don't. At 4 months post op, you are in the chronic phase of healing (meaning all of the acute inflammation, swelling, etc has gone down, but there are still slower changes happening as the tissue mature). Sometimes, areas of "induration" or lumps/bumps under the skin can be apparent during this time. These are commonly the "self-defense" mechanism of the fat cells remaining and their response to the inflammatory processes during the post op healing. These areas can commonly get better with time, massage and gentle warm compresses. Sometimes, skin irregularities happen because fat cells too close to the surface of the skin were removed. These sometimes get better on their own with time as tissues fully settle, and this can take 6-9+ months. Typically if sometime has not gotten better after this time frame, this could be permanent. My best advice is to follow up with your surgeon of record and get their specific recommendations. Thanks again!