A 29-year-old male asked:
This hard lump with no head on my back has been so painful. when i sit up it hurts, when i run i can feel the knot in my back painfully moving up and down with me, im on anti biotic now from doctor . what could this be?
1 doctor answer • 2 doctors weighed in

Dr. Arnold Malermananswered
Orthodontics 55 years experience
Lump? Causes fill textbooks. To guess without benefit of examination would be counter-productive. Your Physician may think it's an infection, thus the antibiotic. If antibiotic helps, source of infection has to be determined and eliminated. Consultation w a specialist Dermatologist may be in order.
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Reviewed Mar 11, 2022
Last updated Mar 11, 2022
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