Skin coloured scaly diseases

The Skin coloured but scaly conditions are just the various forms of Ichthyosis, a group of genetic diseases of the skin. See DermNet for further information.  The commonest is ichthyosis vulgaris where scaling is worse in the winter months and there is sparing at the elbows and knees. 

There is a rare type of ichthyosis that is red and scaly called CIE or congenital ichthyosiform erythroderma. The other options to consider are uncommon but can be found in the mnemonic IAC L cDGA ( I Am Coming Late  Don't Go Away) standing for Ichthyosis, Acanthosis nigricans,  Confluent and Reticulate papillomatosis  Langerhans cell histiocytosis, Darier's , Grovers and Acrokeratosis verruciformis) They can all present as Skin Coloured Scaly papules.
Ocassionaly a drug reaction or an internal malignancy can present as an acquired ichthyosis.