Nail fungus is a common condition that begins as a white or yellow spot under the tip of your fingernail or toenail. As the fungal infection goes deeper, nail fungus may cause your nail to discolour, thicken and crumble at the edge. It can affect several nails.

An ingrown toenail happens when the edges or corners of the nail grow into the skin next to the nail and break the skin. It is a common condition, and it can be painful, causing swelling, redness, and sometimes infection. It usually affects the big toe, either on one or both sides of the toe.

Brittleness of the nails, meaning that the nails easily become cracked, chipped, split, or peeled, can be observed as a sign of ageing or in response to the long-term use of nail polish or exposure to moist conditions (including frequent swimming or dishwashing).