Types of Fungal Infections: Causes & Care

A Complete Guide to Identifying and Treating Fungal Infections

Fungal infections are some of the most prevalent diseases resulting from excessive growth of fungi in or on the body. While many fungi naturally exist on the skin and within the body, certain conditions can trigger infections. These infections can range from mild to severe, depending on the area affected and overall health.

Understanding the causes, types, prevention tips, and fungal infection treatments can help in managing and reducing the risk effectively.

Keep reading to know more!

What are Fungal Infections?

A fungal infection, known scientifically as mycosis, is a disease caused by fungi such as yeast or mould. Typically, they affect the skin or nails but may also affect the mouth, throat, lungs, urinary tract, or any other part of the body.

As a living thing that exists independently of plants and animals, many fungi normally reside both on and in a human being's body, e.g., on the skin or within the digestive system. Under some circumstances, however, they may multiply beyond normal, causing an infection.

Fungal infections can vary in appearance depending on the location of the infection in the body. Skin infections are usually characterised by redness, inflammation, or bumps that resemble a rash, while nail infections are characterised by discoloured nails in yellow, brown, or white. Mouth or throat infections generally appear as white patches inside the mouth or throat.

What are the Types of Fungal Infections?

Fungal infections are broadly categorised based on the area of the body they affect:

1. Superficial Fungal Infections

Superficial fungal infections are infections limited to the outer layers of the skin, hair, nails, or mucous membranes.

Common types include:

Ringworm (dermatophytosis)
Onychomycosis
Candidiasis

3. Subcutaneous Fungal Infections

Fungal infections that occur beneath the skin typically occur when fungi enter through cuts or wounds.

Common types include:

Sporotrichosis
Chromoblastomycosis
Eumycetoma

4. Deep (Invasive) Fungal Infections

These affect the internal organs such as the lungs, blood, brain, or urinary tract and commonly occur in people with weak immunity.

Common types include:

Histoplasmosis
Aspergillosis
Invasive candidiasis
Mucormycosis
Cryptococcosis

This type differs in severity from superficial infections to systemic diseases.

What Causes Fungal Infections?

Fungal infections are caused by yeasts, moulds, and other fungi. Most fungi are harmless (e.g., bread mould), but some can cause infections in humans, especially when they are presented with favourable conditions, such as a weakened immune system.

Some common sources include:

Dermatophytes: These are fungi that feed off of keratin (a protein) found in human skin, hair, and nails.
Candida: This is a species of yeast that normally resides in the human body, but if it overgrows the normal flora in the body then can cause infection, given there are favourable conditions for growth.
Environmental Fungi: These fungi are found in soil or water, such as Histoplasma, Coccidioides, Blastomyces, and Aspergillus.

Fungal infections can occur when these fungi multiply or enter an environment within the body where they have favourable growth conditions.

What are the Symptoms of Fungal Infections?

The symptoms of fungal infections differ based on the infection type and where in the body it occurs. Commonly, fungal infections occur in the skin, nails, and mucous membranes. Sometimes, however, infections may appear inside the body.

1. Fungal Infection of Superficial or Subcutaneous Tissues

Itching, reddening, burning, or rash
Abnormally discoloured, thick, or brittle nails
Painless lump under skin

2. Pneumonia or Lung Infections

Coughing (with occasional presence of blood), fatigue, fever
Shortness of breath, muscle pains, and joint aches
Headache, night sweats

3. Fungal Infection in Other Body Areas

Brain: Headache, fever, neck pain, nausea, confusion, photophobia
Eye: Pain, inflammation, discharge, visual impairment, tears
Intestines: Stomach cramps, nausea, vomiting
Sinuses: Fever, nasal stuffiness, headache, facial swelling, and pain

The symptoms may vary from mild to severe based on the infection location and extent.

Who is Most at Risk for Fungal Infections?

Anyone can develop fungal infections, especially fungal infections of the skin and nails. However, these infections are most likely to occur in areas of the body that hold moisture or get a lot of friction.

Certain people are at a higher risk of severe infections. Individuals who have poor circulation, diabetes, and a compromised immune system. A compromised immune system may be due to the following:

An existing condition or treatment like HIV/AIDS
Cancer and its treatment
Using immunosuppressant medication as part of the management of an autoimmune disorder or after having an organ, stem cell, or bone marrow transplant

How do Fungal Infections Spread?

Fungal infections can spread through the following ways:

Exposure to surfaces that are contaminated in humid public areas, such as showers and locker rooms
Skin wounds, such as cuts, which give entry to the fungi
Breathing in fungi that exist in the environment, such as soil or dust particles
The use of too many antibiotics, which could upset the balance and allow fungi existing in your body to flourish
Direct contact with someone or an animal that is infected

These factors make fungal infections relatively easy to contract, particularly in warm and moist conditions.

How is a Fungal Infection Diagnosed?

The method of diagnosis of fungal infection depends on the area affected by the infection. A medical professional may look at symptoms and take samples to help detect the infection.

Below are a few examples of samples that may be taken for diagnostic purposes:

Skin or other tissue
Nail clippings
Blood
Sputum
Urine
Eye discharge
Vaginal discharge
Cerebrospinal fluid (fluid from the brain and spinal cord)

Samples may be examined microscopically or cultured to identify the fungus. If there is suspicion of the infection being internal, for example, within the lungs or brain, then diagnostic imaging techniques like X-ray, MRI, or CT scan may also be used as part of the diagnosis process.

What are the Fungal Infection Treatment Options?

In most cases, treatment of fungal infections involves antifungals, which eliminate or inhibit fungal growth in the body. Depending on the site of infection and the severity, a health care practitioner may recommend different types of antifungals.

The best fungal infection treatments are:

Pills or oral medications in cases where the infection affects the internal parts of the body or is systemic
Creams, ointments, or dusting powder for conditions affecting the skin
IV medications for cases that require severe medical intervention
Medicated solutions like mouthwashes, throat sprays, eye drops, or shampoos for specific sites

It is always best to seek advice from your doctor before opting for over-the-counter treatment measures.

How Can I Reduce my Risk of a Fungal Infection?

Here are some strategies to decrease your chances of having a fungal infection:

You must maintain your skin's cleanliness and dryness, particularly after sweating and being soiled
Avoid walking barefoot in communal areas such as restrooms, showers, and gymnasiums
Always wear clean and dry cotton underwear and comfortable clothes
Maintain oral hygiene and ensure correct dental care practices
Follow the proper use and cleaning of contact lenses recommended by your ophthalmologist
Keep your nails trimmed and clean
Do not exceed the dose of antibiotic medication, as overuse of such drugs could result in fungal proliferation
Do not share personal items such as towels and garments
Wear protective clothes (gloves, boots, and long sleeves) when engaging with soil
Wear protective equipment like N95 masks or remain indoors in regions where dangerous fungi are abundant, especially during dust inhalation

Fungal infections may develop in various areas of the body; however, they can be prevented using effective measures such as good hygiene and maintenance of other personal habits. It is easy to manage infections when they are detected early and treated appropriately.

Reader Information: The information provided in this article is intended for general educational and informational purposes only and should not be considered medical advice, diagnosis, or treatment. While every effort has been made to ensure the accuracy and reliability of the content, fungal infections can vary widely in severity, symptoms, and underlying causes.

Individuals experiencing symptoms or concerns related to fungal infections are advised to consult a qualified healthcare professional for proper evaluation and personalised treatment. Self-diagnosis and over-the-counter treatments may not always be appropriate and could delay effective care.

FAQs

1. Are fungal infections contagious?

Yes, fungal infections can spread directly from one individual to another through touch or indirectly using contaminated objects or in places that have high levels of humidity.

2. Who is more prone to fungal infections?

People who have weakened immune systems, diabetes, poor blood circulation, or who are taking antibiotics for an extended period of time are likely to get infections.

3. Can fungal infections disappear without treatment?

Mild cases of the problem can clear without medical intervention. However, most fungal infections should receive treatment to completely remove pathogens.

4. How are fungal infections treated?

Antifungal treatment is the usual remedy for eliminating the problem from various locations in the body. This may be administered in the form of pills or oral medications, creams, ointments, or dusting powder, IV medications, etc.