If you are concerned about a lesion on your skin, I recommend that you see a dermatologist
or other healthcare professional for formal evaluation, and possible treatment, if necessary. Skin lesions can have many causes, some benign and others more severe. The appearance of the lesion, as well as the size, texture and firmness can provide clinical clues as to the etiology of the lesion. "bumps" on the skin can have several sources. Common causes include lipoma, ganglion cyst, dermal nevus, chronic trauma. A lipoma is a growth of adipose cells, aka fat cells, in the subcutaneous tissue, and may present as a soft, mobile mass that is non-tender. These lesions are less commonly found on the hand. Dermal nevus is a mole that is below the epidermis and therefore results in no or minimal skin discoloration, but may cause elevation of the overlying skin. Ganglion cysts are quite common on the wrists and hands, and these are benign growths of soft tissue that present as firm mobile masses. Finally, it is common for regions on the hand that are exposed to chronic trauma, such as the dorsal finger tip that holds a pencil, to become enlarged and firm over time. All of these lesions are benign and can be watched. However, it is important to be seen by a doctor
to make sure something more serious is not the cause of your concern.