welcome to hcm.
i can fell your problem.
itching is a problem which irritates a lot.
usualy area between toes become moist and fungal infection
is very common.
though clinically it is not obvious sometimes.
red itchy bumps may be due to various reasons kike contact dermatitis
,friction with footware.excess compression etc.
so to reach a confirm diagonosis it need a detail history and clinical examination.
but you can follow some general measures like
1.apply antifungal creams in between toes before wearing shoes.
2.wash your foot twice during office hours.
then dry it and wear shoes again.
3.if possible remove your shoes for few hours during office time.
4.use washed socks daily.
hope this help.
consult a dermatologist
if it does not help.