Hello Dr My finger nails are turning yellow and...

Dear Customer
Welcome, and thank you for trusting us
Regarding your question
causes of yellow :

• hypothyroidism
• diabetis 
• vitamin A defeciency 
• yellow nail syndrome 
• infection 
• jaundice 
• psoraisis

diagnosis of yellow nail:

• medical history and clinical examination
• vitamin A level
• TSH level 
• serum bilirubin level total and direct 

treatment:

• treatment of the cause
• thyroxine for hypothyroid state 
• antibiotic or antifungal for infection 
• vitamin A replacemt 

in your case: 
the cause must be identified, you high A/G ratio suggest underlying medical problem needing correction.
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