instruction: hi doctor I have noticed something different on the tip of the nails at the tip of all nails a band of half white color has formed and it is going around the circumference of the nail horizontally they are not an exact horizontal line but a circular band around the tip of the nail I am also attaching the picture of my nails for your better understanding I am not sure whether they were always there or have developed recently but I noticed them recently please tell me what is the cause of this I also have some unusual taste in my mouth or tongue I do not know whether they are related with the nails but I have not had this before please help
output: hi for further information consult a dermatologist online