There is a small hard lump under the skin of the left arm.
Jun 01, 2023
Source: Cainiu Health
Dr. Liu Wan
Introduction
A small hard lump under the skin of the left arm may be caused by conditions such as lipoma, cutaneous fibroma, or lymphadenitis, and medication should be selected based on the specific condition. Besides these common causes, other possible reasons include folliculitis, papular urticaria, or sebaceous cysts. It is recommended to seek timely medical attention if any discomfort or symptoms occur.
A small hard lump under the skin of the left arm may be caused by conditions such as lipoma, cutaneous fibroma, or lymphadenitis. Treatment depends on the specific condition. Detailed analysis is as follows:
1. Lipoma
Due to accumulation of mature fat cells in the subcutaneous tissue of the left arm, a painless and non-itchy hard mass can form. Generally, no treatment is required; however, if discomfort occurs, surgical removal may be considered.
2. Cutaneous Fibroma
Caused by multiple factors leading to proliferation of subcutaneous fibrous tissue, resulting in a painless and non-itchy hard lump. Usually no treatment is needed, but surgical excision may be performed if symptoms arise.
3. Lymphadenitis
This refers to benign lesions in the lymph node regions, typically caused by bacterial infection. The main symptoms include swollen lymph nodes and localized pain. Since lymph nodes are also distributed in the armpit area, lymphadenitis under the arm's skin may cause patients to feel a small lump beneath the skin. Treatment may include medications such as amoxicillin capsules or azithromycin tablets, taken as directed by a physician.
In addition to the above common causes, other possible causes include folliculitis, papular urticaria, and sebaceous cysts. It is recommended that individuals experiencing any discomfort seek timely medical evaluation and treatment.
