Hi, thanks for sharing your health concerns with HCM! If I were your treating Doctor for this case of wrist nodule with bruise, I would come up with three possibilities, these include: 1. some insect bite or small hematoma due to unnoticed trauma 2. a neurofibroma or ganglion cyst with pressure effect 3. folliculitis or some microabscess I suggest you take some ice/cold compress and wait for a while; if not receding then go for an FNAC of the nodule for confirmation and to relieve your concerns! Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health.