Upper respiratory allergies and inflammation and swelling of the adenoids, the tissue at the back of the nose, can cause poor fluid drainage from the middle ear to the external ear and therefore cause a blockage in the Eustachian tube. Excess fluid can lead to middle ear congestion.
1 Black skin and Asian skin have thicker and more compact dermis than white skin. This is also why blacks and Asians have fewer facial wrinkles than whites. 2  Black skin has more casual lipids and more moisture in the stratum corneum than white skin.  Black skin has 50% lower ceramides than white or Hispanic skin.
The fact is that black people do get lice much less than white people. Fact is that lice have their own preferences and they seem to like the hair of white people much better than the hair of African American people.The reason for this is that head lice came to the USA with the white immigrants.White peopleâs hair differs from African Americanâs hair by its construction.he fact is that black people do get lice much less than white people. Fact is that lice have their own preferences and they seem to like the hair of white people much better than the hair of African American people.