Thanks for the query.
I understand your concern.
Possible causes of the bump are friction due to inner wear, infection of sweat or sebaceous glands etc.
Small bump can be treated with local analgesic and anti inflammatory creams, avoiding tight inner wear, keeping the area dry and clean etc.
If bump increases in size, better to consult your doctor and get examined to find out the possible cause and take treatment accordingly.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.