Diseases of the skin and subcutaneous tissue (dermatology)

Mycosis of the feet

Mycosis of the feet (mycosis pedis) is a skin lesion of the feet caused by some dermatophyte and yeast fungi, which has a common localization and similar clinical manifestations.

Mycosis of large folds

Mycosis of large folds is a lesion of the skin of the folds and adjacent areas caused by Trichophyton rubrum, Epidermophyton floccosum (seu inguinale), and Trichophyton mentagrophytes.

Skin lesions caused by ultraviolet rays (photodermatoses): causes, symptoms, diagnosis, treatment

Ultraviolet radiation (UV) can reach the skin naturally as part of sunlight and through artificial UV irradiation with special lamps (medical phototherapy lamps and industrial UV lamps).

Candidiasis of the periungual rolls and nails

Candidal onychia and paronychia are the most common forms of superficial candidiasis caused by fungi of the genus Candida. These are opportunistic non-spore-forming dimorphic fungi that are facultative anaerobes.

Onychomycosis: causes, symptoms, diagnosis, treatment

Onychomycosis is a fungal infection of the nail plates, widespread among the population of all countries of the world. Onychomycosis is caused by dermatophyte fungi - most often Trichophyton rubrum, less often Trichophyton mentagrophytes (var. interdigitale) and Epidermophyton floccosum.

Change in nail color: causes, symptoms, diagnosis, treatment

Changes in the color of the nail plate (chromonychia) can occur due to exogenous staining of the nail and can be associated with a number of endogenous factors that affect the color of the nail plate. Color changes to white, yellow, green, blue, red (purple), brown (black) are distinguished.

Changes in nail thickness: causes, symptoms, diagnosis, treatment

On the hands, the normal thickness of the nail plate is on average 0.5 mm, on the feet - 1 mm. A decrease or increase in these indicators should be diagnosed as thinning or thickening of the nail.

Nail surface changes: causes, symptoms, diagnosis, treatment

Changes in the surface of the nails include pinpoint depressions and furrows. Pinpoint depressions on the surface of the nail plate are essentially small erosive defects of the nail keratin. Their presence may be a normal variant - in a healthy person, up to 5 pinpoint depressions may be found on the surface of all twenty nails.

Changes in the shape of nails: causes, symptoms, diagnosis, treatment

The most common variations in the shape of the nail plates are koilonychia and convex watch-glass nails.

Partial and complete absence of nails: causes, symptoms, diagnosis, treatment

Partial absence of the nail plate is understood as onycholysis, i.e. incomplete separation of the nail from the nail bed. In dermatological practice, onycholysis is the most common symptom of damage to the nail plates.