Your toenails tell a lot about your overall health. A fungal infection often causes thickened yellow toenails. Thick, yellow nails also can be a sign of an underlying disease, including lymphedema (swelling related to the lymphatic system), lung problems, psoriasis, or rheumatoid arthritis.
What does the color of your toenails mean?
If your toenails are yellow or brown, they’re probably infected. The color, along with a thick nail, could indicate a fungal infeciton. vipvn/Shutterstock. Toenails that are unusually thick with a yellow or brown-tinge are most likely the result of a fungal infection.
What diseases can your nails tell you?
Additional symptoms to watch out for
|Nail health||Possible cause|
|soft or weak||overexposure to moisture or chemicals|
|yellow||thyroid conditions, psoriasis, or diabetes|
|black lines||psoriasis, endocarditis, nail melanoma|
|ridges||iron deficiency anemia (vertical) or kidney disease (horizontal)|
What is blue toe syndrome?
Blue toe syndrome is characterised by tissue ischaemia secondary to cholesterol crystal or atherothrombotic embolisation. It leads to the occlusion of small vessels. Cyanosis of the digits may have several etiologies ranging from trauma to connective tissue disease.
What is the white hard stuff under my toenails?
Keratin is a protein that promotes the development of the skin and nails. Nail psoriasis sometimes causes too much keratin to grow under the nail. This overgrowth is called subungual hyperkeratosis. People with hyperkeratosis may notice a white, chalky substance under the nail.
What is the white buildup under toenails?
“Nail keratin debris results from a fungal infection of the nail. In medical terms this is called onychomycosis or tinea unguium,” says Batra. The fungal infection breaks down the keratin in the nail to form a white or yellow chalky substance under the nail plate.
Why does my big toenail hurt?
An ingrown toenail is a common cause of pain or discomfort in the big toe. It can occur if a person cuts their toenail too short or curves it in too far when cutting it. Wearing tight shoes may aggravate or even cause an ingrown toenail.
Why do I have big dents in my nails?
Nail pitting is when you have tiny dents in your fingernails or toenails. It can be a sign of psoriasis, eczema, or joint inflammation. You might also get them if they run in your family.