Based on your user name, I assume you are a male patient who underwent rhytidectomy. It is well known that male patients have higher rate of hematoma following rhytidectomy for several reasons. Likely the most pertinent reason is that male patients have facial hair follicle with rich vascular supply compared to females.As many of us have recommended, hematoma after rhytidectomy should be evaluated urgently by the surgeon. It is not uncommon for hematoma to reaccumulate (to be more precise, I feel that re-accumulation tends to be seroma more than hematoma). Seroma can be drained simply with syringe in the clinic, however if it continues to re-accumulate, your surgeon may consider placing a small drain as it can take a few sessions of drainage in the worst case.In most case, this is just a detour and should not affect the overall outcome. But you should be followed more closely first to ensure there is no further re-accumulation and second, post-seroma can result in fibrosis which should be treated timely with steroid injection.