If you have gray nails, is one contagious to two? Yes, gray nails are a minor disease, but they are highly contagious. The onset of gray nails often starts with one fingernail (toenail) and then gradually spreads to other fingernails (toenails). If ten fingernails or toenails develop at the same time, it is often a manifestation of a systemic disease and requires a quick and thorough examination of the body. What are gray nails? The scientific name is “onychomycosis”, which is a disease caused by fungi such as dermatophytes, yeasts, and non-dermatophytes that invade the nail plate or underneath the nail, and the nails appear to be gray in color, which is also known as “grey fingernails”. What harm does it do to our life? 1, affect the beauty of As the saying goes: “hands are the second face of a person”. The beauty of the hands directly affects a person’s temperament. And the beauty of the hand, most of the nails. Hands with nail fungus does hinder the beauty, patients and people shake hands are ashamed of themselves, feel embarrassed. 2, limit the work of the consequences of nail damage is not limited to the ornamental itself, and will involve and even jeopardize the patient’s work, especially some of the exposed and health requirements of the occupation is very strict. Such as doctors and nurses, catering industry, silk weavers, public relations and other jobs. 3, affect the daily life of human beings engaged in threading, writing, cooking, typing, weaving, playing and other work, are inseparable from the assistance of the nails. Once suffering from nail fungus, such work will be disturbed. Nails grow at the end of the hand has a protective role, once the disease, the hand will be very easy due to collision and injury. 4, produce abnormal psychological disorder nail ringworm patients, especially when long-term treatment is ineffective, often will not be able to get rid of the sense of embarrassment and frustration. Especially when the work, marriage, social life is affected by gray nails and failed, the psychological blow to the patient is even greater, often resulting in a sense of inferiority. 5.Complications Nail fungus can cause pain and discomfort, easy to trigger onychomycosis, nail bed inflammation, finger pyoderma and other complications, when serious, can occur dengue or cellulitis and other deep tissues and organs infected with serious systemic symptoms of the disease, and even endanger the life. Female compatriots suffering from onychomycosis can be infected to the pubic area, the formation of mycotic vaginitis and candida albicans vaginitis and other incurable gynecological diseases. 6, become the human body infectious source ringworm patients are very easy to become the infectious source of fungal disease. Patients can scratch and infect other parts of the body with the fungus, producing new ringworm, and when serious, it will also be infected to family and friends. What are the conditions that make it easy to develop ringworm? 1, high temperature, high humidity: easy to more ringworm, like summer, rainy season ringworm than winter, dry season, the number of people sick and heavy; 2, and personal hygiene; 3, contact with public baths and poor hygiene of the swimming pool of people easy to infected with ringworm, keep cats, dogs and other pets, easy to be infected by ringworm on the body of the pets; 4, nutritional status of the poor prone to disease: certain chronic diseases, such as malnutrition, hyperthyroidism, The symptoms of ringworm in diabetic patients are very common, and the symptoms are also heavy; 5. Both men and women of all ages can get the disease, but young and middle-aged men and women are more likely to suffer from it, and those who love to play sports and sweat a lot are also prone to suffer from it.