Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
• Circumscribed cutaneous aplasia of the vertex: A rare birth malformation where a patch of skin on the scalp is missing. Ophanet, a consortium of European partners, currently defines a condition rare when it affects 1 person per 2,000. They list Circumscribed cutaneous aplasia of the vertex as a “rare disease”.
