Skin are very soft in outside as it is covered with vertebrates and functions: protection, regulation, and sensation. The itchy skin are occurred mostly at night and the thing at the most inconvenient time ever. There exist many physiological changes that occur in body at night, including changes in thermoregulation, skin barrier function, and fluid balance. At the beginning, the body starts to regulate its core temperature to be lowest at night. It does this by increasing blood flow to the skin, allows the heat in body to dissipate.
Skin has ability to retain moisture lowest at night. The subsequent dryness cause itchy skin, but an impaired skin barrier makes it easier for itch-inducing substances that causes drama. These substances are produced by cells for a variety of reasons, such as managing and can be triggered by the environment as well (the weather, bug bites). Once the substances are released, they bind to specific receptors that activate nerve endings in the skin, triggering itch. The body’s anti-inflammatory corticosteroid levels are lowered at night, while certain itch-inducing hormones and cytokines are released in higher quantities. Then there exist psychological component. The other reason exist for the skin to feel itchy right before falling asleep.
Stress, Anxiety, and Depression Can Make Nighttime Itchiness Worse
This is a strong association between psychological issues (stress, anxiety, and depression) and itchy skin, though it’s not clear. One of the theory is that psychological drama can hyper-activate the body’s fight-or-flight response, flooding the body with hormones and activating the immune system as protection. When the stress occurs in small doses, the body’s release of cortisol has an anti-inflammatory effect that may cancel out the stress-induced itchiness caused by the excess histamines. But chronic stress and anxiety, it can interfere with the body’s ability to produce enough cortisol to pick up the slack and this may be what makes the nighttime itches that much more intense.
It Can Also Be a Sign of an Underlying Health Issue
There also exist non-dermatological conditions that can cause nighttime itchiness, such as restless leg syndrome, diabetes, and thyroid problems, as well as kidney disease and cancer on the more serious side of the spectrum. Most of these conditions can trigger a hormonal imbalance, autoimmune response, or sensory response In addition to nighttime itchiness there are other pesky symptoms like night sweats, constipation, tingly feet, weight gain, dry skin, dizziness, and fatigue.
Fortunately, There Are Lots of Ways to Cope With Nocturnal Pruritus
The more you scratch, the more get nocturnal pruritus. Meanwhile, a melatonin supplement, can help with keeping the sleep cycle on the rails. Avoid taking a hot showers, as the heat can actually trigger nighttime itchiness. So, keeping the skin as cool as possible at night can also suppress the desire to itch like over-the-counter hydrocortisone cream, can be useful in breaking the scratch-itch cycle.