Black hard bumps under the skin can be caused by pigmented nevus, seborrheic keratosis, basal cell carcinoma, melanoma, fibroma and so on, and it is feasible to have physical, surgical, radiotherapy and other treatments after the cause of the disease is clarified.
1. Pigmented nevus: pigmented nevus is a benign skin tumor, originated from melanocytes, which may appear as black hard nodules and bumps on the skin. Generally no treatment is needed, but if the nevus grows in friction-prone area or has the tendency of malignant transformation, surgical excision should be considered, and pathological examination should be carried out to further clarify the condition.
2. Seborrheic keratosis: it is a benign epidermal proliferative tumor, which occurs in the elderly group, and may appear black hard lumps under the skin. It can be treated with electrocautery, laser or surgical excision according to doctor’s instruction, and pathologic examination can be carried out to further clarify the diagnosis.
3. Basal cell carcinoma: there may be black hard lumps under the skin, usually with slow growth and local destructiveness, which can be treated with laser, cryotherapy, surgery and other treatments as prescribed by doctors, and can also be treated with topical medicines such as retinoic acid and imiquimod.
4. Melanoma: it belongs to malignant tumors with high malignancy, and there will be black hard lumps under the skin. Surgical resection is feasible, and chemotherapy, radiotherapy, immunotherapy and targeted therapy can be carried out according to the condition.
5. Fibroma: dermatofibroma can appear under the skin as slow-growing round or ovoid solid nodules, which can be manifested as dark brown hard lumps, often with no conscious symptoms, and can be accompanied by itching sensation. Usually there is no need for treatment, but under the guidance of the doctor, corticosteroids and other drugs can be applied, and if necessary, surgical excision is feasible.
When black hard bumps appear under the skin, you should consult a doctor in a timely manner, and actively treat them under the guidance of the doctor.