I have general swelling in my left armpit..there is no lump and it feels like the armpit is puffy.i have no other symptoms except slight discomfort.

Axilla: Sometimes an axilla(armpit) feels puffy to the patient despite no evident pathology on examination. In these circumstances an irritability and/or some tension of muscular components or, low grade skin irritation or even a slight strain are possible causes of this discomfort. To be sure there is no pathology like enlarged deep lymph glands, have your physician examine you.