A raised bump on the back may be related to acne, folliculitis, boils, etc.
1. Acne: It may be related to factors such as excessive secretion of sebaceous glands on the back, which may result in one or more raised pimples on the back, and in severe cases, pustules or nodules may appear.
2. Folliculitis: Because there are hair follicles on the back, when the follicles are infected by bacteria or fungi, it will lead to folliculitis, which manifests as red pimples with redness, swelling and pain, and there will be white pus dots on the top part.
3. Boil: Related to Staphylococcus aureus infection, it looks like a hemispherical nodule with a pus spot in the center.
A raised lump on the back may also be an epidermal cyst, lipoma, etc. Patients should consult a doctor promptly to clarify the cause and under the guidance of the doctor for standardized treatment.