Hi thanks for you question
The itching and small inclination filled with clear fluid under the skin is due to trauma to the foot, caused by walking long distances. The trauma has damaged the skin under the foot which has released histamine
responsible for itching and exudation of fluid resulting in small vesicles formation.
Take rest for 1 to 2 days ,it will heal of itself.
For pain and itching you can take analgesics(pain reliever) and anti histiminic
Hope i answered your question.Answers: