Fungus and toenails. Therefore, nail fungus is a prevalent nail ailment. At first, it looks like a white or yellow-brown area beneath the tip of your fingernail or toenail. As the fungal infection spreads, the nail may thicken, break apart at the edge, and change color. Nail fungus can affect a lot of nails. If your illness is mild and doesn’t bother you, you might not need therapy. If your nail fungus is uncomfortable and has caused thicker nails, medication and self-care practices may be beneficial. Even with effective treatment, nail fungus often reappears.
FUNGUS AND TOENAILS
However, this fungus infiltrates it rather than the skin between your toes or on the bottom of your feet . Fungi are microscopic organisms that are only visible under a microscope. Nail infections can be caused by a wide variety of types. They can occasionally live on your skin without causing any problems. However, you could become infected if you have a bunch in one place. If you have toenail or fingernail fungus, don’t be ashamed. You wouldn’t believe how frequent that is.
1. lateral subungual region;

The most prevalent type is this one. It is caused by a fungus known as a dermatophyte. It might appear in your toenails or fingernails. It begins beneath the nail in the nail bed. There will be spots where it separates from the nail bed and a yellowish patch that extends from the nail’s edges to the middle.
Onychomycosis that is superficially white
This is less frequent and primarily affects your toenails, affecting only the nail surface. The nail crumbles as a result of the white patches that turn into powder.
Onychomycosis at the proximal stage

FUNGUS AND TOENAILS
Initially, this manifests as white dots near the cuticle in the middle of the nail bed. As the finger or toenail grows, they spread outward. It is uncommon and typically affects those with immune system issues, such as HIV.
2. Candidal onychomycosis;
Also, yeast causes this infection that usually affects your fingernails. The area around the nails is often swollen and inflamed, and the nails may come off entirely. It tends to happen to nails that have been damaged by an injury or another infection.
Causes;

FUNGUS AND TOENAILS
When a fungus enters and grows inside a nail crack or the skin surrounding it, you have an infection. Your toenails are more susceptible than your fingernails because the fungus prefers warm, dark environments. Additionally, your body finds it more difficult to detect and stop an infection in your toes since they receive less blood flow than your fingers.
Treatment;
antifungals used orally
However, the doctor might prescribe a medication to eradicate the fungus throughout your body. In most cases, this is the most effective method for eliminating a nail infection. If the infection is in your fingernails, treatment may take two months; if it’s in your toenails, it may take three months. antifungals used topically. These medications are applied to your nails by brushing or rubbing.
Surgery

The doctor might have to remove your nail completely and let a healthy one to grow in its place if previous treatments are unsuccessful. Also, the new nail may become infected.
Laser therapy

FUNGUS AND TOENAILS
Also, In an effort to eradicate the fungus, researchers are looking into more recent therapies that employ specialized light.
Summary
fungus on the toenails. If you have toenail fungus, your nail becomes thick, yellow, and may have white areas and streaks. A type of mold called a dermatophyte is the cause of tinea unguium, the most common nail fungus.