Onycholysis—nails pulling away from the bed—can follow medications or harsh chemicals, but sometimes signals thyroid trouble. It begins at the tip, leaving a whitish gap filled with air. Other triggers include psoriasis, fungus, trauma, and certain antibiotics. Repeated manicures or long water exposure worsen it. Care focuses on keeping nails dry, avoiding aggravating tasks, and letting the nail grow out. If a systemic disease such as thyroid disorder is to blame, treating that condition prevents future episodes.
