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First of all it is best to remove pubic hairs or at least trim it so that better hygiene can be maintained.Reason is because of hair the area can't be dry & stays moist giving rise to fungal/yeast infection.Secondly the pea size lump in mons pubis
is the clitoris
& not a disease lump so don't worry.The dark & withered skin is normal .Itching in anal region could be due to worms so take a tablet for deworming.Itching in vulva
region is as i said due to fungal infection
so please remove or trim hair & apply candid
ointment locally you will get relief.