Raynaud’s phenomenon, also known as Raynaud’s syndrome or disease, is a condition that affects blood circulation in the extremities. It occurs when cold temperatures or emotional stress cause small arteries in the skin to narrow, restricting blood flow. This vasospasm leads to visible color changes in the affected areas—usually fingers and toes, but sometimes the nose, ears, lips, or nipples. A typical Raynaud’s episode occurs in three stages. First, the skin turns white due to reduced blood flow. Then, it becomes blue as oxygen decreases. Finally, it turns red when blood flow returns. These episodes may be accompanied by numbness, tingling, or pain. Raynaud’s is more common in women and usually develops between ages 15 and 30, though it can affect people at any age. The intensity and duration of attacks vary widely—from a few minutes to several hours—depending on individual triggers and conditions.

Triggers include cold exposure, stress, and anxiety. Use of vibrating tools in occupational settings may also increase the risk. There are two types: primary Raynaud’s, which occurs independently, and secondary Raynaud’s, which is associated with autoimmune diseases like lupus or scleroderma. While most cases are mild, severe secondary Raynaud’s can lead to ulcers or gangrene if untreated.

Preventative strategies include wearing warm clothing, avoiding stress, and quitting smoking. Treatments may involve medications that dilate blood vessels, and in extreme cases, surgical intervention. Anyone experiencing frequent discoloration and discomfort in their fingers or toes should consult a healthcare provider for diagnosis and proper management.