Achluophobia is also known as Myctophobia, Scotophobia or Nyctophobia which is an abnormal fear of darkness. This type of phobia is often seen in young people, making the sufferer feel sick and may act differently as well. This is often seen in women and children. There are various treatments for this type of disorder, including a case where you will be required to sit in the darkness and witness this disorder. There are other treatments that might be effective and those that will last only for a day. The main goal here is for you to understand that the darkness is not dangerous and is not always related to any danger at all.