Inflammation or damage to the ilio-inguinal nerve, which may cause pain or numbness in the groin and upper inner thigh.
Medical records that document the nature and extent of your nerve symptoms are central to any rating. A diagnosis of ilio-inguinal neuritis or nerve damage, along with a provider's description of whether the loss of function is mild, moderate, or severe, directly maps to the rating levels. Physical examination findings showing reduced or absent sensation in the groin, inner thigh, or scrotal or labial area help establish severity. Nerve conduction studies or other objective testing, if performed, can support the degree of impairment. Because the regulation limits a purely sensory nerve to mild or moderate at most, records that show any motor involvement would be relevant. Statements from you describing how pain or numbness affects your daily activities and work can help show the practical impact of your symptoms at each level.
Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.