It may be due to inflammation of vein (thrombophlebitis) or cellulitis.
Physical examination of the effected part can help in more precise diagnosis.
Next Steps
Take Arnica Montana 30 Thrice Daily for 7 days.
Apply Hamamelis Ointment thrice daily for 7 days.
Health Tips
Avoid overexertion, take nutritious diet. Drink sufficient liquids.