A kind of blood circulation related problem.
Usually obstruction for blood flow associated with collection of unwanted toxins in blood...
In simple words.
Next Steps
There must be a root cause in lifestyle..
Generally
Habit of fried fish or grilled nonvegs
pickles , fermented or fridge batter, like stuffs are commonly found.
Health Tips
Find out such causes and correct those.
Application of virgin coconut oil to whole body
daily just before bath
helps to correct the circulation.