Nail Disorders

What are some common nail disorders?

Our nails may look different due to various reasons. Some common causes of nail changes include nail trauma, bacterial or fungal nail infection and an associated skin condition such as psoriasis.

Is the dark band on my nail something to be worried about?

A dark vertical band on the nail is known as linear melanonychia. Sometimes, it may be extensive and cover the entire nail. Linear melanonychia is usually due to the activation of pigment-producing cells (melanocytes) at the nail matrix, where new nail grows out from. Some causes of linear melanonychia include nail trauma, infection, hereditary factors, medication, skin tumours (such as a mole) and skin cancers Sometimes, a dark discolouration of the nails may not be due to melanin (skin pigment). A blood clot under the nail or external colouring agents like dye can appear worrisome but are harmless. As there are many causes of melanonychia, it is important for you to consult a dermatologist if you have a new onset of pigmented band on your nail.