Conclusion
Eczema is a common allergic skin disease that can vary from mild to severe. A major sign of the disease is frequent itching if the affected and there are various reasons why it causes itching. Although the exact cause of eczema is still unknown, experts have identified some known triggers. It is best to avoid scratching when you have eczema as it would only worsen your condition.
References;
[1] https://nationaleczema.org/
[2] https://www.sciencedirect.com/science/article/pii/S1578219014003333
[3] https://pubmed.ncbi.nlm.nih.gov/1575979/
[4] https://skinbetter.com/transepidermal-water-loss-important/
[5] https://dermnetnz.org/topics/nodular-prurigo