Nail fungus has been a problem for many people, with the elderly and adolescents being the most affected. It includes nail fungus and toenail fungus. The causes of toenail fungus are: 1. pulling barbs at will; 2. not disinfecting the skin near the nail after breaking; 3. accidentally piercing the skin when washing fish and shrimp, etc. The causes of toenail fungus are: 1, trauma (toes kicked to hard objects or stepped on); 2, toenail trimming is not reasonable; 3, wear uncomfortable shoes; the above causes seem to be some small problems and habits, but often ignored. At first, the pain is just red and swollen, but within a short period of time, the infection will become septic and even spread to the nail root and the opposite nail groove, forming a perinephritis, and sometimes it will also spread to the nail to form an abscess under the nail, when the pain has increased, swelling is obvious, and yellow-white pus can be seen under the nail, which can develop into purulent dactylitis or even cause osteomyelitis if not disposed of in time. The consequences of nail fungus are so terrible and serious, so how can you avoid it? The first thing to do is to cut your toenails diligently, do not pull barbs, chew nails, nails trimmed on time, cut into curves, nail grooves on both sides of the toenail tip, do not just cut nail grooves, found toes squeezed each other should be an appropriate amount of disinfectant cotton, soft objects into the toe seam apart, so that the toes normal development, to prevent compression toe nails stuck into the nail groove. Secondly, wear shoes of appropriate size, fat and thin, suitable and lightweight shoes; furthermore, usually pay attention to the maintenance of the fingers, after washing hands, before going to bed, apply petroleum jelly or skin cream, can enhance the skin around the nail furrow resistance to disease. So pay more attention to these small details in life, you may be able to avoid the pain, but when the finger (toe) nail has appeared red, swollen and hot pain, do not deal with it yourself, to seek medical attention in a timely manner, to avoid delaying the disease. A small nail infection is a big problem that should not be ignored. Develop good habits to avoid nail infections and keep our lives away from the pain of nail pulling.