What causes pseudocholinesterase deficiency?

What are the mammographic features that shows abnormality in breast?

@tuasha There are many reasons for dark underarms like chemical irritants in deodorants and antiperspirants, the accumulation of dead skin cells due to infrequent exfoliation, friction caused by tight clothes, and smoking. You can try Changing your deodorant or antiperspirant, Exfoliate, Wear loose-fitting clothes, and continue with waxing instead of other methods. Try applying coconut oil, and tea tree oil for 15 minutes. Thanks.