Checkup Introduction. People make appointments to see their doctor for many different reasons. Some only go to the doctor when they are experiencing a new problem or concern and are looking for a specific diagnosis or treatment. Others see their doctor at more regular intervals for ongoing follow-up of a chronic problem or disease.
Donât blame it on the sunshine. Most people believe these yellow stains are a result of sweat. After all they only occur in the armpit area. In addition to this, they seem to be ubiquitous on summer clothing. It just has to be the sweat that causes it.
Bacteria. Many types of bacteria can cause infections which are localized in the breast or arm and can drain into glands positioned underarms. This causes infections which lead to the lumps under the armpit. For instance, Bartonella Henselae is a bacterium that can cause swollen lymph nodes under the armpit.