Blepharitis is an inflammation of your eyelids caused by a staphylococcus bacterial infection. It can make your eyelids and eyelashes red and crusty, and make your eyes feel irritated or itchy. It can also lead to burning, soreness or stinging in your eyes. In severe cases, your lashes may fall out and you can develop small ulcers and styes as well.
It is a chronic (long-term) condition, which means that once you have had it, it can come back again. It normally affects both eyes. You can usually treat it by just taking care with your hygiene, but you may need treatment for several months.
Your optometrist or doctor can spot the signs of blepharitis by looking closely at your eyelids.
Read more about Blepharitis, here