Most nail problems happen because
– Hurting or chewing your nails
– Coloring your nails, like from smoking or using lots of nail polish
– Not trimming your nails regularly or cutting them strangely
– Often having your hands in water or cleaning substances
– Getting a fungal nail infection
Nail problems might also show a bigger or lasting problem, such as
– Psoriasis
– Not enough iron in your blood (iron deficiency anemia)
– A thyroid that’s not active enough or too active
– Diabetes
– Heart, lung, or liver sickness
