Nail cap pain when pressed may be caused by local trauma, onychomycosis and Raynaud’s syndrome. 1. Trauma: Finger nails are squeezed, bumped and other trauma, resulting in capillary rupture and bleeding under the nail cap, usually painful, and the pain is aggravated when pressed. 2. Onychomycosis: Inflammatory lesions occurring in the soft tissues around the nails, the infection involves the nail bed, and may appear as pain in the nail cap when pressed, accompanied by redness, swelling and pain in the tissues around the nails. 3. Raynaud’s syndrome: also known as arterial spasm of the extremities, cold or emotional excitement, mental tension after the occurrence of small arteries in the nail bed strong contraction, resulting in local ischemia, can cause localized tingling in the nails, the pain is more serious when pressed. The symptoms of pain in the nail cover when pressed, it is recommended to consult a doctor in time to clarify the cause of the disease, and active treatment.