The lateral cutaneous nerve of the forearm, also known as the lateral antebrachial cutaneous nerve, is a sensory nerve that provides sensation to the skin on the outer side of the forearm. It branches from the musculocutaneous nerve and emerges near the elbow, traveling down the forearm to supply the skin. This nerve is important for feeling touch, temperature, and pain in the lateral aspect of the forearm. Damage or irritation to the lateral cutaneous nerve can lead to numbness or tingling in the affected area, impacting daily activities and overall comfort.