A permanent ridge in one fingernail may come from past injury, repeated pressure, or changes near the nail root. Learn when to see a dermatologist.
Why Does One Fingernail Grow With a Permanent Ridge?
Tag: Moles & Lesions
Why Does a Small Bump Release a Thick White Material When Squeezed?
A small bump that releases thick white material may contain keratin or trapped skin debris. Learn common causes, why squeezing can hurt, and when to seek care.
Why Does a Scar Get Little White Bumps Along the Edge?
Little white bumps along a scar may be milia or other skin changes. Learn why they develop, what to avoid, and when to see a dermatologist.
Why Do I Have a Bright Red Dot That Never Goes Away?
A bright red dot that won’t disappear may be a cherry angioma or another skin growth. Learn possible causes, warning signs, and when to see a dermatologist.
Why Does One Toenail Have a Dark Line That Never Seems to Grow Out?
A dark line on one toenail that never grows out may have several causes. Learn why it persists, which changes matter, and when to see a dermatologist.
Why Does an Old Scar Become Tender Again Years Later?
Why does an old scar suddenly hurt again? Learn about nerve sensitivity, tissue tension, common triggers, and when a dermatologist should evaluate it.
PDT for Recurrent Actinic Keratoses After Cryotherapy
Learn when PDT may be considered for recurrent actinic keratoses after cryotherapy, how the treatments differ, and what to expect.
PDT for Field Treatment of Sun Damage on the Forehead
Learn how photodynamic therapy (PDT) treats widespread sun damage and actinic keratoses on the forehead, including preparation, recovery, and aftercare.
Why Do I Have a Hard, Persistent Bump Where I Got a Splinter Years Ago?
A hard bump at an old splinter site may be scar tissue or a foreign body reaction. Learn why it persists and when to see a dermatologist.
PDT for Actinic Keratoses on the Nose and Cheeks in South Florida
Learn how PDT may be used for actinic keratoses on the nose and cheeks, what treatment involves, and why sun protection matters in South Florida.
