Hi Doctor, Ive noticed a small greenish-blue lump under the skin of my right hand. Its about 2mm in size, immovable, hard, and painless. Should I be concerned or is this something that will go away on its own?

A small, hard, and painless lump under the skin can be concerning._Possible causes:_1. _Ganglion cyst_: A common, benign lump that can develop under the skin, often near joints.2. _Lipoma_: A harmless, fatty lump that can grow under the skin.3. _Calcification_: A small deposit of calcium that can form under the skin.4. _Benign tumor_: A non-cancerous growth that can develop under the skin._What to do:_1. _Consult a doctor_: Schedule an appointment with a primary care physician or a dermatologist.2. _Examination and diagnosis_: A doctor will examine the lump and may order imaging tests (e.g., ultrasound or X-ray) to determine the cause.3. _Treatment options_: Depending on the diagnosis, treatment may involve monitoring, removal, or other interventions._When to seek immediate attention:_1. _Rapid growth_: If the lump grows rapidly or changes in size.2. _Pain or tenderness_: If the lump becomes painful or tender.3. _Redness or swelling_: If the surrounding skin becomes red, swollen, or inflamed.