What does it mean when my fingertips are cold and tingle under the nail bed especially when i touch things? its mainly both index fingers

Raynaud's?: Raynaud's disease is a condition that causes some areas of your body (such as your fingers or toes) to feel numb and cool in response to cold temperatures or stress. In raynaud's disease, smaller arteries that supply blood to your skin narrow, limiting blood circulation to affected areas. This can cause the symptoms of tingling and coldness. While uncomfortable, it is not dangerous.