Why is my Big toe nail curling?

A curling big toe nail can be caused by several factors, including improper footwear, nail trauma, fungal infections, or an underlying health condition like psoriasis. Tight shoes can put pressure on the nail, causing it to grow abnormally. Additionally, genetics may play a role in nail shape. If the curling is accompanied by pain or other symptoms, consider consulting a healthcare professional for advice and treatment options.