Blepharitis is caused by bacteria usually found on the skin. It is characterized by an inflammation of the eyelids, causing itchy and red eyelids. Unhealthy lifestyle may cause this kind of diease but it is not genetic. Blepharitis can be controlled with proper eyelid hygiene. If left untreated, it can progress into a more serious condition like injury to your eye's tissue or scarring.
The blepharitis is not heredity. But if your children get touched with the cloth you use, they may get the high risk of blepharitis. Blepharitis is commonly known as black rim of the eye. That is the chronic inflammation of the eyelid margin of skin and eyelash root which has a tendency to relapse because of chronic conjunctivitis refractive errors pick-up or irritant gases, long-term stimulation caused by weak life not health and so on. The self-conscious symptom for itch painful eye is dry feeling and visual fatigue. In some cases, bacterial infections develop. The blepharitis is worse and serious blepharitis will appear in the eyelid margin small ulcer, making eyelash fall off palpebral skin and enter into the eye which can cause conjunctivitis. You need to pay attention to this and do something to protect your eyes. You should put the cloth you use away from the place your children's cloth put. You need to use the eyes drops to get rid of the bacterium and use the warm compress to make your eyes get comfortable.
As far as i am concerned, the blepharitis is not genetic. The blepharitis is characterized by an inflammation of the eyelids, causing itchy and red eyelids. And I think the reasons that can give rise to it are almost because of the living environment, just like bacteria usually found on the skin, and your unhealthy lifestyle, which may also cause this kind of diease. It is said that blepharitis is not inherit from parents. So, your living environment and lifestyle are more important than genetic to get blepharitis. It can be controlled with proper eyelid hygiene, but if you left untreated, it can progress into a more serious condition like injury to your eye's tissue, making eyelash fall off and enter into the eye which can cause conjunctivitis. Thus you'd better take some measures as soon as possible when you get it.