I have a dark patch on my inner elbow on one side ..i am overweight and have poly cystic ovaries is there any connection? what is wrong with me ?

Check up: Some possible causes of increased pigment and patches in that area include eczema, allergic reactions, dry skin or a skin condition related to diabetes. If you are overweight, your doctor will screen your lipid panel, cholesterol and hba1c . A balanced diet with fruits/vegetables, lean protein, grains and daily exercise will help maintain your health.

Pigment patches: The dark patches are called acanthosis nigrans which is prominent with women who have polycystic ovaries.