hello Osgood–Schlatter disease or syndrome (also known as epiphysitis of the tibular tubercle, or knobby knees) is an irritation of the patellar ligament at the tibial tuberosity. It is characterized by painful lumps just below the knee and is most often seen in young adolescents. Risk factors may include excess weight causing diabetes and overzealous conditioning (running and jumping), but adolescent bone growth is at the root of it Treatment is conservative with RICE (Rest, Ice, Compression, and Elevation), and if required acetaminophen (paracetamol), ibuprofen and/or Co-Codamol or stronger if in acute phase & (the pain is severe and continuous in nature). The condition usually resolves in a few months Take care