L21.0: Seborrhoea capitis
The precise cause of this skin disorder is unknown. The skin has probably been colonized by fungi. As a result, your skin has become inflamed. The areas of skin that are usually affected are those that produce a lot of sebum and are often hairy.
Your scalp is extremely scaly. Your scalp is also red and oily. Often, the skin does not itch at all, or only a little.
The rash can get worse in the winter months and with certain illnesses.
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If you see an ICD diagnosis code (e.g., on a medical report), be aware that doctors may also include additional indicators to express diagnostic certainty. Only a healthcare professional can interpret these codes accurately in the context of your individual case.
For a complete understanding of your condition and what the diagnosis means for you, please speak directly with your doctor.