What Causes Hard Skin Along With Stiffness In Joint Of Finger?

on he joint of my pointy finger the skin is hard and split and very sore. the joint doesn t seem to like bending and is stiff and feels almost like it clicks when moved. when I bend my finger it feels tight sore and turns pale in a small lump type of way my hands all over are dry chapped and tight itchy and sore and sometimes red and irritated