Brief Answer:
Please give few more details and upload any reports if done

Detailed Answer:
Hi.
Thanks for your query and the picture.

To recapitulate: Male/45 - hard spot in arm - looks to be a vein - not under the service of the skin.

Please give additional information for me to assist you further:
- Since when have you got this?
- Is it painful or tender?
- Is it freely XXXXXXX or fixed to the under-surface of the skin?
- What is the size and shape on palpation?
- Is the surface smooth or irregular?

Please provide these information.

Regards

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Brief Answer:
as explained in details.

Detailed Answer:
Hi.
Thanks for your feedback.

2 days old lump with the characters that you explained can be due to:

- infected sebaceous cyst
- if you feel vein, it would have been compressible and colored blue. But if local thrombosis, which can be idiopathic, meaning the cause is not known, can be hard and tender.

I would advise you the following in such a situation:
Since you are travelling for work, try to take an anti-inflammatory like Ibuprofen if it suits you.
Do not fondle as the inflammation can increase.

Get a confirmation by clinical evaluation and examination, preferably by a General Surgeon ASAP so that prescription based medicines can be started as per the necessity.

If needed high resolution ultrasound helps tremendously to get a confirmed diagnosis and a plan for treatment as needed.

Regards

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Brief Answer:
Thanks for detailed feedback

Detailed Answer:
Thanks for a very clear followup.

This is suggestive of a dilated part of vein, say a saccular part of it.
There may not be a definite cause of it. Loss of the supporting connective tissues can cause this.

Regards

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