Dark Spot Under Acrylic Nail

Sometimes they might even turn yellow due to over-curing at UV light.
Dark spot under acrylic nail. The nail may thicken over time and it can crumble in severe cases. Like Doug said above these are often caused by some. Nails which are half white with dark spots particularly on the nail tips can be suggestive of kidney diseases.
Psoriasis will affect the nails and may cause brown spots on it. Once the nail gets infected the fungus thrives as the fake nails offer a perfect place for them to thrive a warm moist and dark atmosphere. Melanoma under nail Medical name.
Now the nail fungal infection may go unnoticed for a long time under acrylic nails as it hides there. No matter what I do - ex take off the acrylics and file the green off - it comes off cause its weak and rips on anything. The iron in our blood causes the red or brown color.
Ive done nails for over 25 years and I have seen a few green spots always where the acrylic coating has lifted so water seeps in and most often when the lift effects about a quarter slight lifts dry out and areas that lift so the the coating is really loose. Age spots dark marks Cellulite fat removal Hair removal. Pseudomonas is a common bacter.
At time same time your toenails could be hard and brittle nails due to the fungis growths and give out a foul smell as well. See your doctor if you suspect any infections. Splinter haemorrhage can show up as brown or red lines alongside.
Other reasons are due to your nail coming into contact with strong chemicals such as cleaning agents make up products spices such. Anyhow I have a that green nail under a acrylic. Not every dark streak is a melanoma but its always good to.