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A case of fungal infection of the big toe Advanced fungal infection of the big toe. The most common symptom of a fungal nail infection is the nail becoming thickened and discoloured: white, black, yellow or green. As the infection progresses the nail can become brittle, with pieces breaking off or coming away from the toe or finger completely.
Chronic paronychia is an infection of the folds of tissue surrounding the nail of a finger or, less commonly, a toe, lasting more than six weeks. [4] It is a nail disease prevalent in individuals whose hands or feet are subject to moist local environments, and is often due to contact dermatitis .
Epidermophyton floccosum is a filamentous fungus that causes skin and nail infections in humans. [1] This anthropophilic dermatophyte can lead to diseases such as tinea pedis (athlete's foot), tinea cruris, tinea corporis and onychomycosis.
A nail disease or onychosis is a disease or deformity of the nail. Although the nail is a structure produced by the skin and is a skin appendage , nail diseases have a distinct classification as they have their own signs and symptoms which may relate to other medical conditions.
On the hands, it occurs particularly on the ring finger but can occur on any of the fingernails. It may also happen to toenails. Onycholysis can occur in many conditions, including psoriasis. [2] In thyrotoxicosis, it is thought to be due to sympathetic overactivity. [3] It may also be seen in infections or trauma. [4]
According to Mayo Clinic, the common cold is usually viral and resolved within a week to 10 days. Here are some symptoms according to the organization: Runny or stuffy nose.
Infectious tenosynovitis in 2.5% to 9.4% of all hand infections. Kanavel's cardinal signs are used to diagnose infectious tenosynovitis. They are: tenderness to touch along the flexor aspect of the finger, fusiform enlargement of the affected finger, the finger being held in slight flexion at rest, and severe pain with passive extension.
The seal between the nail and finger acts as a physical barrier to prevent infection, however hyper-hydration or destruction of the epidermis can impair the barrier, allowing the bacteria to colonise. [medical citation needed] The nail turns green due to the bacteria secreting pigments such as pyocyanin [3] [4] and pyoverdin. [9]