22: Eczematous and Contact Dermatitis - Frush

Question 1

define eczematous dermatitis

Answer 1

An inflammatory response of the skin to many different external and internal stimulants

Question 2

acute v. subacute v. chronic eczematous dermatitis

Answer 2

Acute Vesicles, blisters, or bullae Erythema and pruritis Subacute Erythema, scaling, fissuring Parched or scalded appearance Chronic Lichenification, fissuring and accentuated skin lines

Question 3

what characterizes asteatotic dermatitis?

Answer 3

dry scaling, fine superficial cracking Develops due to decreased skin surface lipids - Dry winter weather - Harsh soaps - Frequent bathing - Age

Question 4

tx asteatotic dermatitis

Answer 4

**Regular lotions may aggravate the condition - Use skin emollients (Lanolin, glycerin, urea, lactic acid) - Moisturizing soaps - Decrease frequency of bathing - Humidifiers - Topical corticosteroids in severe conditions

Question 5

atopic dermatitis aka

Answer 5

atopic eczema allergic eczema atopy

Question 6

associated with allergic rhinitis and asthma

Answer 6

atopic dermatitis

Question 7

what does atopic dermatitis look like?

Answer 7

Erythematous papulovesicular eruption that evolves into dry, scaly dermatitis with accentuated skin lines Becomes lichenified plaques over time

Question 8

Extremely pruritic rash Chronic or recurrent Personal or family history of asthma, seasonal allergies and eczema

Answer 8

atopic dermatitis

Question 9

distribution of atopic dermatitis with age

Answer 9

0-2 years - Face, wrists, extensor surface of arms and legs - Papulovesicular lesions 2-12 years - Flexor surfaces, face, wrists, ankles - Maculopapular lesions that are extremely puritic Adolescents and adults - Flexor surfaces, face, wrists, knees, hands and feet - Lichenification, xerosis, papulation

Question 10

recurrent skin reaction on hands and feet usually brought on by stress and hyperhidrosis

Answer 10

dyshidrotic eczema do KOH to rule out fungal origin

Question 11

burrow’s solution

Answer 11

helps to dry lesions and reduce perpiration

Question 12

• Exposed to sensitizing agent for a brief period of time - No prior sensitization needed - Concentration of irritant must exceed a threshold before a reaction can take place - Not immunologically mediated - Irritant reaction can occur immediately after contact - Comprises 80% of contact dermatitis

Answer 12

primary irritant contact dermatitis

Question 13

allergic contact dermatitis

Answer 13

• Delayed T cell-mediated immune response to antigen - Type IV hypersensitivity reaction - Introduction period of 5-7 days required before first appearance of hypersensitivity - Repeated exposure causes response to be more rapid and severe - Exacerbated by heat and warmth

Question 14

appearance of allergic contact dermatitis vs. irritant contact dermatitis

Answer 14

Allergic contact dermatitis appears with erythema, vesiculation and edema Irritant contact dermatitis looks like a burn with large blisters

Question 15

occurs when topical agent gets activated by sunlight

Answer 15

photodermatitis

Question 16

photoxic reaction to plants

Answer 16

phytophotodermatitis

• due to light sensitive compound (furocoumamrins (psoralens)
• lime juice, carrots, parsnip, dill

Question 17

dermatitis related to rubber lining of toe box of shoes

Answer 17

toe box dermatitis