'Help! Don't Know What Is Happening To My Skin!'

Good day Nairalanders. I need your opinions please. Don't know what's up with my skin these days
Noticed something like a patch on my hand and Abs last week but I ignored it bcus it wasn't visible.
But Now it's worsening daybyday and giving me great concerns. Pls fam and Experts in the house what's your take on this and how can I make it clear off Pls? Any opinion on this will be greatly appreciated