A feature of zinc deficiency. Click for full description.

A feature of vitamin C deficiency that is characterized by fragility of the underlying capillaries resulting in bleeding under the nail. Click for full description.

Abnormalities of the nail plate that are characterized by poor nail structure of both fingernails and toenails resulting from vitamin B12 deficiency. Click for full description.

Abnormalities of the nail plate that are characterized by poor nail structure of both fingernails and toenails resulting from iron deficiency. Click for full description.

Abnormalities of the nail plate that are characterized by poor nail structure of both fingernails and toenails caused by B vitamin deficiencies and severe stress. Click for full description.

Abnormalities of the nail plate that are characterized by poor nail structure of both fingernails and toenails resulting from deficiencies of protein, calcium, and omega-3 fatty acids. Click for full description.

Abnormalities of the nail plate that are characterized by poor nail structure of both fingernails and toenails resulting from deficiencies of calcium and vitamin A. Click for full description.

The hard, translucent, non-living keratin structure that covers the tips of fingers and toes.

Living tissue that produces the non-living nail plate and is located unseen at the base of the nail plate under the lunula (moon).

A feature of osteomalacia characterized by painful proximal muscle weakness involving the thighs and upper arms and hyperreflexia resulting from deficiencies of phosphorus and vitamin D.

An impairment of musculature of the eyeball that is characterized by abnormalities of eye movement including difficulty initiating and maintaining eye movement and contact. Can result from magnesium deficiency. Click for full description.

Impaired status of muscle function mainly resulting from  nutritional deficiencies including any of these: protein, magnesium, thiamin (B1), niacin (B3), potassium, phosphorus, selenium, and vitamin D,  or due to chronic fatigue syndrome or hypoglycemia, and if suddenly, due to hypokalemic rhabdomyolysis. ...

A disorder of muscle tissue resulting mainly from any of these conditions: protein deficiency, vitamin C deficiency, thiamin deficiency (B1), and in the disorder, dermatomyositis. Click for full description.

A disorder of muscle function mainly resulting from calcium and/or potassium deficiency, also idiopathic hypoparathyroidism. Click for full description.

A disorder of muscle tissue resulting from multiple nutritional deficiencies; also autoimmune thyroiditis, chronic fatigue syndrome, fibromyalgia, and dermatomyositis. Click for full description.