Neuritis
It is an inflammation of the nerve because of infectious agents such as bacteria, fungal and viruses, degenerative diseases such as diabetes mellitus, sarcoidosis, and systemic lupus, malnutrition as a result of chronic alcohol, restricted vegans, vitamin B12 deficiency and some drugs. Median neuritis irritates the nerve leading to numbness and pain in all the fingers except little finger and the palm on the affected side.