Final Answer:
The symptoms point to onychomycosis, a fungal nail infection characterized by thickening, yellow-white discoloration, subungal debris, and nail plate separation. Scaling on the soles suggests a potential secondary infection.
Step-by-step explanation:
Onychomycosis is a fungal infection that affects the nails, leading to various symptoms such as thickening of the nail plate, yellow-white discoloration, subungal debris, and separation of the nail plate from the nail bed. The causative agents are often dermatophytes, yeast, or non-dermatophyte molds. The thickening of the nail plate occurs due to the invasion and colonization of the fungus in the nail tissues, causing structural changes.
Yellow-white discoloration is a result of the fungus producing pigments or causing keratin breakdown. Subungal debris, composed of keratin, debris, and fungal elements, accumulates as the infection progresses. Separation of the nail plate from the nail bed, known as onycholysis, is caused by the destruction of the nail matrix by the invading fungus. The scaling on the soles, if present, could suggest a concurrent fungal infection affecting the feet, possibly tinea pedis.
Proper diagnosis and treatment are essential to manage onychomycosis effectively. Topical or oral antifungal medications are commonly prescribed, and in severe cases, surgical intervention may be required. Additionally, maintaining good foot hygiene and avoiding conditions that promote fungal growth, such as warm and humid environments, can aid in prevention. Regular follow-ups with a healthcare professional are crucial for monitoring the progress and adjusting the treatment plan as needed.