welcome to healthcare magic forum .
thank you for your query .
it look like some allergic or infective condition '
it may be due to dry skin
you need to apply good moisturizer 3-4 times a day
for itching you can take tab cetrizine
will help you
do not scratch or pick the skin as it will increase chance of infection .
it may be due to heredity reason also .
better to consult dermatologist
if not improved
i hope i answered your query .