Hi, thanks for writing to HCM.
All your symptoms are suggestive of superficial thrombophlebitis
(inflammation in the superficial vein
) in the arm.
To confirm the diagnosis of this condition, a doppler ultrasound
Superficial thrombophlebitis is usually a short-term condition that does not cause complications. Symptoms generally go away in 1 to 2 weeks.
To reduce discomfort and swelling, support stockings and elevation of the affected limb are recommended.
A warm compress in the form of moist heat fomentation to the area may also be helpful.
Non steroidal antiinflammatory medicines like Advil
reduces the pain & inflammation.
Appropriate antibiotics are needed , if there is an associated infection.
I suggest you to consult a physician for detailed evaluation and further management.
Hope this information is helpful. Good day