The main reasons for feeling itchy specifically at night include natural body changes like circadian rhythm effects, which influence skin temperature, hydration, and inflammation levels, making skin more prone to itching. At night, the body releases more inflammation-promoting substances (cytokines) and reduces production of anti-inflammatory hormones (corticosteroids), increasing itchiness. Skin also loses more water during the night, leading to dryness and itch, especially in low humidity or winter conditions. Additionally, fewer distractions at night can make one more aware of even mild itches, and underlying skin conditions such as eczema, psoriasis, or allergies may become more noticeable in the quiet night environment. Insect activity (e.g., bedbugs, scabies) and some systemic illnesses can also cause worse itching at night. In summary, itchiness at night can result from a combination of:
- Circadian rhythm changes in the skin and body temperature
- Increased skin dryness and water loss at night
- Heightened sensitivity due to less daytime distraction
- Underlying skin conditions like eczema or infections
- Possible insect bites or systemic issues
If itching is persistent or severe, it is advisable to consult a healthcare provider to rule out underlying conditions.