Thank you for waiting.
I am very sorry for your symptoms.
I understand your concern.
Aching of hand can be from overuse, tenosynoitis.
You can take Motrin or Advil for it.
Muscle twitch is often benign.
Benign twitch can be due to electrolyte, calcium and vitamin deficiency.
Anxiety, stress, excess caffeine can also cause it.
Muscle fatigue can have a role.
Lack of sleep can cause it.
Though neurological disorder can be a cause but it is usually associated with loss of sensation, weakness, wasting etc.
Please take plenty of fresh fruits & vegetables, fluid to correct any deficiency.
If you develop any other symptom, I would advise to get an examination by doctor.
Please do not worry.
I hope this information will be helpful.
If you have any query, please feel free to ask.
Your satisfaction is my goal.
If you are happy with my answer please click on 5 star rating so that I can get the credit for helping you.
Wish you healthy life.