I have a small group of little lumps under skin on top one side my ribcage that now are starting to be sore is this something concerned about?

It's important to see a doctor to evaluate any new or changing skin lesions. While your symptoms could be a benign condition, such as a lipoma or cyst, they could also indicate something more serious, such as a skin cancer or an infection. A dermatologist or other healthcare professional will be able to examine the lesions and determine their cause.

Here are some possible causes of small, sore lumps under the skin on the ribcage:

* Lipomas: Lipomas are benign fatty tumors that can grow anywhere on the body, including the ribcage. They are usually soft, moveable, and painless, but they can sometimes become sore or tender if they grow too large or are located in an area that is subject to pressure or friction.

* Cysts: Cysts are sac-like structures that can contain fluid, pus, or other material. They can develop anywhere on the body, including the ribcage. Cysts can sometimes become infected or inflamed, which can cause pain or tenderness.

* Skin cancer: Some types of skin cancer can appear as small, sore lumps on the skin. These lumps can be red, scaly, or crusty, and they may bleed or ooze fluid. Skin cancer is more likely to develop in areas that are exposed to the sun, but it can also occur on any area of the body.

* Infections: Infections of the skin or soft tissues can also cause small, sore lumps. These lumps may be red, swollen, and warm to the touch. Infections can be caused by a variety of bacteria or viruses.

If you are concerned about any new or changing skin lesions, it is important to see a doctor for evaluation. Early diagnosis and treatment can help to improve your prognosis for any type of skin condition.