My friend has some strange lumps that have come up on her spine, and back. she said they are very painful, she feels achy, and there are 3 or 4 of them and they are about quarter sized, stick out a little and feel like they are filled with fluid. There were only 2 about a week ago, and they were smaller.
Thanks for your question on Chat Doctor. I can understand your friends situation and problem. By history and description possibility of multiple sebaceous cysts is more. It is more common on back and often filled with infected fluid (sebum). So ask your friend to consult dermatologist and get done clinical examination. He may need antibiotics and anti-inflammatory Chat Doctor.  Diabetes should also be rule out as it is common in diabetics. So consult doctor and discuss all these. Hope I have solved your query. Wishing good health to your friend. Thanks.