Sisäänkasvuja

Sisäänkasvuja, meaning ingrown in Finnish, most commonly refers to ingrown hairs. An ingrown hair occurs when a hair grows back into the skin instead of emerging from the follicle. This can happen after shaving, waxing, or epilating, particularly in areas where hair is coarse or curly. When the hair fails to break through the skin's surface, it can curl back and penetrate the skin, leading to inflammation, redness, and sometimes pain.

The symptoms of an ingrown hair can include small bumps that may resemble pimples, itching, and tenderness in the affected area. In some cases, an ingrown hair can become infected, resulting in a pustule or boil. While most ingrown hairs resolve on their own, persistent or infected ingrown hairs may require medical attention. Prevention methods include exfoliating the skin regularly to help hairs grow out properly, shaving in the direction of hair growth, and using a sharp razor. Avoiding tight clothing after hair removal can also help reduce friction that might cause hairs to grow inwards. Proper hygiene is crucial to prevent infection.