Polycystic ovary syndrome. PCOS is the most common endocrine disorder, with a prevalence of 6-10%.It is also the most common cause of irregular menstrual bleeding, oligomenorrhea, or amenorrhea, associated with hyperandrogenism. Oligomenorrhea is defined as menstrual cycles occurring more than 35 days to 3 months apart.
Cubital and Radial Tunnel Syndrome. In this article. Cubital tunnel syndrome and radial tunnel syndrome aren't as familiar as their better-known relative -- carpal tunnel syndrome -- but they also can cause severe pain, numbness, tingling, and muscle weakness in the hands and arms.
Cubital Tunnel Syndrome. A common cause of tingling and numbness in the ring and small finger is cubital tunnel syndrome. Cubital tunnel syndrome refers to a problem related to compression of the ulnar nerve at the elbow within the cubital tunnel. Compression of the ulnar nerve will cause tingling and numbness, coordination disturbances in the small muscles of your hand, and weakness of hand grip and of pinch strength.