Why does a toenail break?

* Trauma: This is the most common cause of toenail breaks such as stubbing your toe, dropping something heavy on it, or having your toenail caught in something.

* Fungal infections: Toenail fungus can cause the nail to become brittle and break.

* Psoriasis: Psoriasis is a skin condition that can affect the nails, causing them to become thick, brittle, and break easily.

* Eczema: Eczema is another skin condition that can cause the nails to become dry, brittle, and break easily.

* Nutritional deficiencies: Deficiencies in certain vitamins and minerals, such as biotin, calcium, and iron, can cause the nails to become brittle and break easily.

* Medical conditions: Certain medical conditions, such as diabetes, thyroid disease, and kidney disease, can cause the nails to become brittle and break easily.

* Medications: Some medications, such as chemotherapy drugs and certain antibiotics, can cause the nails to become brittle and break easily.

* Aging: As people age, their nails become thinner and more brittle, making them more likely to break.