Hello there, Welcome to HCM, Wisdom tooth is the last tooth to erupt in the oral cavity and often its eruption is associated with complications. wisdom teeth are often tilted in position and impacted in the bone , gums overlying the tooth forms a pocket like area which usually undergoes inflammation due to entrapment of food debris. i suspect the lump near the wisdom tooth is due to some kind of abscess or infection in the surrounding gums known as gingival abscess. exact diagnosis can be made only after clinical examination and evaluation by taking radiographs. consult a dentist and get the examination done as the lump needs to be treated for easy eruption of wisdom tooth. i hope this helps, take care.