Dermatology (look at podcast) Flashcards

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1
Q

What is dermatology?

A

Skin conditions - common

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2
Q

Discuss Eczema

A

Common in children

Redness Scaling + dryness

Itchy (release of histamine) (bleeding)

Thickening of skin

Scratching leads to breaking of skin

Can get vesicles - blistering

Can get infected - bacterial

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3
Q

What is the treatment of Eczema?

A

To reduce itching to reduce scratching

Emollients = moisturisers (E45)

Topical steroids

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4
Q

What is Atopic Eczema?

A

Irritant contact dermatitis

e.g. washing hands frequently

Irritant response to cheap jewellery, detergents, cosmetics

Causes sore, dry skin, itchy splits in skin

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5
Q

How do you treat atopic eczema?

A

Treat w/ emollients

Apply liberally + frequently

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6
Q

What is allergic contact dermatitis?

A

Allergic reaction

Cause blistering

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7
Q

How to treat allergic contact dermititis?

A

Emollients + topical steroids

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8
Q

Name a mild topical steroid

A

1% hydrocortisone

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9
Q

Name a moderate topical steroid

A

Clobetasone butyrate

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10
Q

Name a potent topical steroid

A

Betamethasone

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11
Q

Name a very protein topical steroids

A

Clobetasol propionate

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12
Q

How do you use topical steroids

A

Apply once daily

On the affected areas

Not sparingly - finger tip rule

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13
Q

What is Psoriasis?

A

Common skin disease

Autoimmune disease

Causes abnormal rapid growth of skin cells

Red, flaky, crusty patches with silvery scale

E.g. elbows, knees, scalp, ears, hairline

Can be nail + joint movement

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14
Q

Treatment of psoriasis

A

Vit. D analogues (+/- potent steroid)

Emollients

Coal tar

Topical steroid monotherapy (special circumstances)

Dithranol (topical retinoid)

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15
Q

Second line treatment for Psoriasis

A

Phototherapy

Acitretin

Immunosuppressants (cyclosporin, methotrexate, fumaric acid esters)

Biological agents (anti-TNFalpha, ustekinumab)

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16
Q

Downfalls of psoriasis treatment

A

Steroid Tachyphylaxis

Sudden withdrawal of potent topical steroids/oral steroid causes rebound

Oral steroids never used for psoriasis

Drugs that exacerbate psoriasis:

  • beta-blockers
  • lithium
  • interferon
17
Q

What is Urticaria?

A

They are like hives

Either allergic/non-allergic

Caused by release of histamine

Treat w/ oral antihistamine

Occurs w/ morphine - displaces histamine from mast cells

Nettle stings - oral antihistamine

Pruritus (itching) - calamine, crotamiton

18
Q

Further treatment on asthma

A

Immunosuppression

Phototherapy

Alitretinoin

Topical calcineurin inhibitor

19
Q

What causes acne

A

Increased sebum secretion

Blocked pores

Colonisation with Propionibacterium acnes

Inflammation

20
Q

How to diagnose acne

A

Non-inflammatory lesions

Open and closed comedones

Inflammatory lesions

Pustules

Papules

Nodules Scars

21
Q

Topical treatment for acne

A

Benzoyl peroxide

Azelaic acid

Retinoids

Antibiotics

22
Q

Systemic treatment for acne

A

Antibiotics

Oral contraceptive pill - reduce androgens in the body which cause sebum Isotretinoin