Final answer:
Parakeratosis is a skin condition characterized by the retention of nuclei in the stratum corneum. It is commonly seen in disorders like psoriasis and eczema.
Step-by-step explanation:
Parakeratosis is a skin condition characterized by the retention of nuclei in the stratum corneum, the outermost layer of the epidermis. Normally, the nuclei are shed during the process of keratinization, but in parakeratosis, they persist. This can result in the formation of a thickened outer layer of the skin.
Parakeratosis can be seen in various skin disorders, such as psoriasis and eczema. In psoriasis, the rapid turnover of skin cells leads to the accumulation of nuclei in the stratum corneum, causing the characteristic scaling and thickening of the skin.
In summary, parakeratosis is a skin condition characterized by the retention of nuclei in the stratum corneum. It is commonly seen in disorders like psoriasis and eczema.