hi thanks for your query
as per discussion you might have ulnar nerve entrapment
at elbow site
Ulnar nerve entrapment occurs when the ulnar nerve in the arm becomes compressed or irritated. The ulnar nerve is one of the three main nerves in your arm. It travels from your neck down into your hand, and can be constricted in several places along the way.
,common cause are --the nerve slides out from behind the medial epicondyle
when the elbow is bent. Leaning on your elbow for long periods of time can put pressure on the nerve.
Fluid buildup in the elbow can cause swelling that may compress the nerve.
A direct blow to the inside of the elbow can cause pain
Avoid activities that require you to keep your arm bent for long periods of time.
If you use a computer frequently, make sure that your chair is not too low. Do not rest your elbow on the armrest.
Avoid leaning on your elbow or putting pressure on the inside of your arm. For example, do not drive with your arm resting on the open window.
Keep your elbow straight at night when you are sleeping. This can be done by wrapping a towel around your straight elbow or wearing an elbow pad backwards.
Painkillers for pain ,steroids
or splinting ,nerve gliding exercise etc.
You may require surgical option if problem persist or worsened
you should consult to your GP for confirmation of it and also rule out ulnar neuropathy
and peripheral vascular causes