The MSK Specialist

 Knowing when to worry about a lump under the skin starts with one simple rule: a new lump with no clear cause should always be checked. Many lumps have common, non-serious causes. However, nobody can tell what a lump is by looking at it or feeling it alone. A GP should assess any lump that is new, growing or changing. This guide explains what lumps can look and feel like, which signs need prompt attention and what happens when you get one checked. Knowing When to Worry About a Lump Under the Skin Most people find a lump by chance, in the shower or whilst dressing. It is natural to feel anxious. The sensible next step is to get it looked at, rather than waiting to see what happens. See a GP promptly if a lump: is new and has no obvious cause, such as a knock or an insect bite is growing, or changes in shape, colour or texture feels hard, fixed in place or irregular is painful, or has become painful comes back after it has been removed appears alongside symptoms such as unexplained ...

 Your tailbone may hurt when you sit because pressure irritates the coccyx, its small joints or the surrounding muscles and ligaments. This is called coccydynia. Prolonged sitting, a fall, childbirth or changes in cushioning around the area can contribute, although sometimes no clear cause is found. Pain at the top of the buttock crease can also come from a skin problem rather than the bone itself. This guide explains the differences, practical ways to sit more comfortably and when assessment is needed. Our introduction to coccydynia provides further background on tailbone symptoms. Where is tailbone pain usually felt? The coccyx sits at the very bottom of the spine, below the sacrum. Muscles and ligaments attach around it, including structures associated with the pelvic floor. Coccydynia usually causes tenderness in the centre of this area, near the top of your bottom. Pain may feel bruised or achy, with a sharper twinge when sitting down or getting up. NHS tailbone guidanc...