Hello, Thanks for writing to us. After going through the entire description, I am of the opinion that the cause for lump is cat scratch disease. Most cases of cat scratch disease resolve without any treatment. Rarely, a swollen lymph node becomes so large and painful that the doctor may recommend removing fluid from the node with a needle and syringe. Antibiotics sometimes are used to treat the disease. To ease sore nodes, try warm, moist compresses. I do hope that you have found something helpful and I will be glad to answer any further query.