It is also interesting that many, perhaps most, patients with this condition also have skin allergies, eczema and/or asthma. The patient with moderate to severe icthyosis often has problems sweating due to the buildup of scales on the skin. The scales essentially seal the sweat glands.
For now, it is good to know the names. These names apply to all major and minor scales. 1  1st-Tonic. 2  2nd-Supertonic. 3  3rd-Mediant. 4  4th-Subdominant. 5  5th-Dominant. 6  6th-Submediant. 7  7th-Leading Tone.
Its a half step. Take a more careful read of the very page you cited. What they're saying is that a diatonic semitone is a semitone that occurs between different letter names: E to F or B to C. As for there being a difference, Greg is right that there is no sonic difference: a semitone is ALWAYS a half step.eport Abuse. Actually, a  Chromatic Semitone is a Half Step; however, a  Diatonic Semitone is a whole step. EX. E-F is a Diatonic Semitone EX. C-C# is a Chromatic Semitone Read More ... http://www.greenspun.com/bboard/q-and-a-...