Hair, Nails And Mucous Membrane Disorders Flashcards
The nail is composed of what structures
Matrix, nail bed, hyponychium, cuticle, lunula, nail plate, eponychium
Describe Beau’s Lines
Transverse depression of the nail plate or grooving that goes across the nails
Beau’s Lines are found in what conditions
Zinc deficiency, lupus, psoriasis, serious illness/infection, trauma to the nailbed
Oncholysis occurs when
Distal nail plate detaches
Longitudinal melanoychia appears as what?
Brown-black bands due to melanin in the nail plate
Nails that are extremely hard and difficult to trim are most likely due to
Pachonychia congentia
Pachyonychia congenita is a very rare genetic disorder with what symptoms
Thickened nails, painful callouses and blisters on the bottoms of the feet and possibly the hands
Twenty nail dystrophy is associated with what conditions
Amylodosis, alopecia areata, lichen planus, psoriasis, pemphigus vulgaris, Sarcoidosis
Twenty nail dystrophy (trachyonychia) is described as what
Brittle nails with diffuse longitudinal ridging that can also have pitting, loss of Lustre or toughened nail plate
Clubbing of the nail is associated with what condition
COPD
A nail condition caused by frequent handwashing, detergent and water is
Onychoschizia - this is caused by frequent wetting and drying of the nails which leads to peeling of the nail plate layers
Squamous cell carcinoma of the nail may present as
Hyperkeratosis, onycholysis, veruccal, paronychia, nail plate dystrophy or sugungual mass
The ABCDEF of nail melanoma includes
Age of the patient, band of brown-black color, change in size or growth, digit (thumb, big toe or index finger usually affected), extension of color (Hutchinson sign) and family hx of melanoma
First line pharmaceutical treatment of chronic paronychia is
High potency topical corticosteroids
The hair growth cycle where hair growth and metabolic processes are decreasing and regression of the hair follicle is noted
Catogen
Longest phase of the hair cycle, lasting 2 to 5 years, is when the hair is in the “growth phase”
Anagen
Hair growth cycle where hair is in a resting phase. Usually lasts 3-4 months and ends with hair falling out.
Telogen
Hair growth cycle where 50-100 hairs a day are shed from the scalp. This phase can last 2-5 months as new hair is growing into follicles
Exogen
Non scarring alopecias
Alopecia areata, telogen effluvium, anogen effluvium, traction alopecia, androgenetic alopecia