L40-L45: Papulosquamous disorders
L42: Pityriasis rosea
This skin condition is also known as pityriasis rosea. Before the first reddish patches of skin appear, you may have other symptoms such as tiredness, headache and fever. The first sign is often an isolated roundish, reddish patch that forms on the skin. The spot has a clearly recognizable edge. There may be fine scales on the surface. Many more similar-looking patches appear after a while. The reddish patches can either itch or cause no discomfort. They are able to heal on their own after a while.
The pityriasis rosea mainly appears on the upper body. However, it can also affect other areas of the body such as upper arms and thighs.
The cause of pityriasis rosea has yet to be resolved. However, it is believed that pathogens such as viruses, among other things, can cause this condition.
Patient Disclaimer
The information provided on this page is for general educational purposes only. It is not intended for self-diagnosis and does not replace professional medical advice. Always consult your doctor or a qualified healthcare provider with any questions or concerns about your health.
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.