Ichthyosis vulgaris can have a cracked pavement appearance, and can be inflamed, especially in winter.

The scales are stuck on and will slough off and renew again. Emollients with lactic acid can help alleviate the dry appearance of ichthyosis vulgaris.

Large, dark, platelike scales characterized this ichthyosis, which is X-linked ichthyosis. Ichthyosis vulgaris can look like this, although usually the scales are not as dark.