Subcutaneous Hard Lumps on the Calf: Causes and Solutions

A hard lump appears under the skin of the calf?

Dear Dr.
Wu,
I have developed unexplained subcutaneous nodules on my calf since last year.
Initially, they appeared as small lumps, but recently they seem to be gradually enlarging.
When I press on the nodules, I do not feel any pain or itching; they just feel hard to the touch.
I have attached photos for your reference: ppt.cc/HgXkHppt.cc/MJD8x.

Could you please help identify what the issue might be? I have a history of hyperthyroidism and have been on medication for over two years, which has caused my weight to increase by more than 20 kilograms.
I am wondering if this could be related to obesity or side effects from the medication.

I would appreciate your advice on how to proceed.
Thank you.

Jean, 30~39 year old female. Ask Date: 2016/01/23

Dr. Wu Yuxin reply Dermatology

Due to the issue of hyperthyroidism, there is a possibility of myxedema.
However, without actually observing the lesions, it cannot be confirmed.
It is recommended to have a dermatologist evaluate it for a definitive diagnosis.

Reply Date: 2016/01/23

More Info

Understanding subcutaneous hard lumps on the calf can be concerning, especially when they appear without pain or itching. Based on your description, these lumps have been developing over the past year, and their gradual enlargement may indicate a few potential causes.
Firstly, it is essential to consider the nature of these lumps. Subcutaneous lumps can arise from various conditions, including lipomas, cysts, fibromas, or even more serious conditions like tumors. A lipoma is a benign tumor composed of fatty tissue, which is typically soft and movable under the skin. Cysts, on the other hand, are fluid-filled sacs that can also present as hard lumps. Fibromas are benign tumors made of fibrous or connective tissue.
Given that you have a history of hyperthyroidism and have experienced significant weight gain, it is possible that these factors could contribute to the development of subcutaneous lumps. Hyperthyroidism can lead to changes in metabolism and fat distribution, which might influence the formation of lipomas. Additionally, weight gain can increase the likelihood of developing fatty deposits under the skin.

To address your concerns, here are some steps you can take:
1. Consult a Healthcare Professional: The most critical step is to consult with a healthcare provider, preferably a dermatologist or a general practitioner. They can perform a physical examination and may recommend imaging studies, such as an ultrasound, to assess the characteristics of the lumps.

2. Biopsy if Necessary: If the lumps appear suspicious or if there is any concern about malignancy, a biopsy may be performed. This procedure involves taking a small sample of tissue from the lump for laboratory analysis.

3. Monitor Changes: Keep an eye on the lumps for any changes in size, shape, or texture. Note any new symptoms that may arise, such as pain, redness, or warmth, which could indicate inflammation or infection.

4. Lifestyle Modifications: Since you mentioned weight gain, adopting a healthier lifestyle may help. This includes a balanced diet, regular exercise, and weight management. These changes can improve overall health and potentially reduce the formation of new lumps.

5. Medication Review: Discuss your current medications with your healthcare provider. Some medications can have side effects that may contribute to skin changes or the development of lumps. Your doctor may consider adjusting your treatment plan if necessary.

6. Educate Yourself: Understanding the potential causes of your symptoms can empower you to make informed decisions about your health. Research reputable sources or ask your healthcare provider for information regarding subcutaneous lumps and their implications.

In summary, while the presence of subcutaneous hard lumps on your calf may not be immediately alarming, it is essential to seek medical advice to determine their cause and appropriate management. Your history of hyperthyroidism and weight gain could be relevant factors, but only a thorough evaluation by a healthcare professional can provide clarity and peace of mind.

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