<human>: i have a lump on the outside upper right arm that started a few months ago small and no pain and in the last week or two grew at least double turned red and hurts to the touch. feels like a giant "button" that you sometime have inside your leg but bigger. mario
<bot>: Hello, According to your narration, it is inflammatory lesion involving subcutaneous tissue mostly sebaceous cyst type thing (a high-resolution clinical photograph would be so much appreciable here). Can take temporary painkillers at present, but have to consult your doctor for clinical check-up because there is redness and hurting proves that there is definite presence of infection inside. Then your doctor will decide plan of management with antibiotics and anti-inflammatory agents to tackle the condition precisely. Till then take care not to injure it, keep it clean and Chat Doctor. Hope I have answered your query. Let me know if I can assist you further.