I would like to know why women of islamic faith must wear a headdress. And also, what the different types?

Answer 1

In Islam the rules of modesty apply to BOTH men AND women.
Meaning you can't walk around in a burqa with hot pants as a girl or tight as heck jeans as a guy. Women are expected to wear a headress because their hair is longer and let's be completely honest: it is a device for sexual attraction. Some men with long hair use it a sexual device too so that's why Muslim men should not have long hair.

It is a MUST to follow these rules and one facet of this rule is to wear a headscarf (hijab) in order. The difference is very important here. It is a sin not to wear hijab, but no person can force it on you (no compulsion in Islam).
Meaning: We are all sinners and those that don't wear hijab are sinning, but its not something to be worked up about. There are much bigger sins to worry about.

Types:
Hijab: basic head scarf. Some people completely cover hair, some leave bangs falling out, some wear a tight cloth and twist it.

Niqaab: This is where you can only see the eyes as there is a veil. This is NOT a must, but some sisters do it because its another level of modesty.

Burqa: This is where you don't see anything as their is a mesh screen for the woman to look out of, but you can't necessarily see the eys. No sane Islamic scholar would argue this is a must.

Again let us be clear: hijab technically means barrier. All Muslim men and women are supposed to have a barrier to stop any sexual looks or advances.

Answer 2

Americans has this idea that these women are forced and oppressed. They don't feel that way at all. They enjoy this type of dress. They enjoy the modest lifestyle.

Answer 3

The Qur’anic verse, “Say to believing women, that they cast down their eyes and guard their private parts, and reveal not their adornment save such as is outward; and let them drape their headcoverings over their bosoms, and not reveal their adornment . . .” (Qur’an 24:31) is a specific requirement for Muslim women to cover their hair.

The word “headcoverings” (Ar. singular khimar, plural khumur), more familiar in our times as the hijab, is a word of well-known signification among scholars of Arabic, at their forefront the authors of the classical lexical reference dictionaries like Zabidi’s encyclopedic Taj al-‘arus or Mutarrizi’s al-Mughrib, both of which define khimar as “a woman’s headcovering”; or Fayumi’s al-Misbah or Fayruzabadi’s al-Qamus, which both define it as “a cloth with which a woman covers her head.” The Taj al-‘arus also notes that a man's turban is sometimes referred to as a khimar “because a man covers his head with it in like manner as a woman covers her head with her khimar when he disposes it in the Arab manner, turning part of it under the jaws nearly in the same manner in which a woman disposes her khimar.” These authorities are cited in the eight-volume Arabic-English Lexicon of Edward William Lane, who describes the khimar as “a woman’s muffler or veil with which she covers her head and the lower part of her face.”

There is no other lexical sense in which the word khimar may be construed. The wording of the command, however, “and let them drape their headcoverings over their bosoms,” sometimes confuses nonspecialists in the sciences of the Qur’an, and in truth, interpreting the Qur’an does sometimes require in-depth knowledge of the historical circumstances in which the various verses were revealed. In this instance, the elliptical form of the divine command is because women at the time of the revelation wore their headcovers tied back behind their necks, as some village women still do in Muslim countries, leaving the front of the neck bare, as well as the opening (Ar. singular jayb, plural juyub, translated as “bosoms” in the above verse) at the top of the dress. The Islamic revelation confirmed the practice of covering the head, understood from the use of the word khimar in the verse, but also explained that the custom of the time was not sufficient and that women were henceforth to tie the headcover in front and let it drape down to conceal the throat and the dress’s opening at the top.

This is why Muslim women cover their heads: because the Qur’an unambiguously orders them to, and there is no qualifying text or hadith or even other lexical possibility to show that the Qur’anic order might mean anything besides obligation. Rather, the hadiths all bear this meaning out, Muslim scholars are in unanimous agreement about it and have been from the time of the Prophet (Allah bless him and give him peace) down to our own day, and it is even known by all non-Muslim peoples about them.

There was thus nothing new or surprising in the Islamic legal opinion promulgated in December 2003 by the Grand Mufti of Egypt, Sheikh ‘Ali Jumu‘a of the Egyptian Fatwa Authority (Dar al-Ifta’ al-Misriyya) that “the hijab is an obligation on all Muslim female adults, as firmly established in the Holy Qur’an and the Prophet Muhammad’s hadiths, as well as unanimously agreed upon by Muslim scholars.” He pointed out that unlike the cross sometimes worn by Christians, or the skullcap worn by Jews, the hijab is not a “symbol” of Islam but rather that “Islam orders female adults to wear hijab as obligatory religious clothing.” It is part of every Muslim woman’s religious practice.

Some ink and words have been spent by some contemporary ethnic Muslim women writers (and an occasional convert) trying to do away with the covering of hair mandated by the Qur’an and the unanimous consensus of Muslims. They say—accurately enough, for a Muslim does not leave Islam merely by committing a sin—that one can take off the hijab and still remain a Muslim. But such a person remains a bad Muslim, who deems aping non-Muslims better than practicing Islam. For what? The Supreme Being knows our benefit better than we do; and if one believes in Allah, Master of every atom in the universe, it is only plain sense to follow Him. When all else fails, read the directions. Those who refuse to wear the hijab are acting out of ignorance or bad faith, and when one meets them, one seldom finds they manage to practice the other aspects of their religion. In the end, it is a matter of hearts. The heart that is alive has a sense of eternity, and knows that the infinite is greater than the finite. The heart that is dead follows the trends of the trend makers because it has turned its back on the Divine and forgotten endless time.

Answer 4

Only extremists make them do this. Islamic women have the choice to wear a hijab or not.