Passmedicine Flashcards by Gill Mill

Peri-orbital and nasolabial scaly rash, dandruff

Seborrhoeic dermatitis

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First line treatment for seborrhoeic dermatitis

Topical ketoconazole

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Worst type of melanoma

Nodular melanoma

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Toxic epidermal necrolysis is a rare but important side effect of which medications?

Penicillins

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Symmetrical target lesions

Erythema multiforme

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Treatment for excessive sweating

Topical aluminium chloride

Botox

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Drugs which can cause a lichenoid eruption

Gold
Quinidine
Thiazides

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What is the Koebner phenomenon

Skin lesions which appear at the site of injury

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Treatment of impetigo

Topical fusidic acid

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Red or black lump, oozes or bleeds, on sun-exposed skin

Nodular melanoma

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Trichophyton rubrum

Fungal nail

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Treatment for fungal nail

Oral terbinafine first line

alternative = oral itraconazole

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Malassezia fungus causes what skin condition?

Ptyriasis versicolour

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Treatment of scabies

Permethrin

Malathion lotion

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Treatment of pyoderma gangrenosum

Oral steroids

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Treatment of erythrasma

Erythromycin

(erythrasma is a generally asymptomatic, flat, scaly, pink or brown rash usually found in the groin or axilla - caused by overgrowth of diptheroid Corynebacterium)

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What causes dermatitis herpetiformis?

Caused by deposition of IgA in the dermis

-associated with coeliac disease

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How to identify cause of contact dermatitis

Skin patch test

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Treatment of erythema nodosum

Usually resolves within 6 weeks - don’t usually give active treatment

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What is erythema nodosum

Inflammation of subcutaneous fat

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Treatment of pityriasis versicolour

Topical ketoconazole

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This rash might occur after a sore throat?

Guttate psoriasis

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How long will someone be itchy with scabies for?

Normal to be itchy for up to 4-6 weeks post eradication

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Where are keloid scars most likely to form?

Sternum

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Side effect of topical corticosteroids (e.g. clobetasone)

May cause patchy depigmentation in patients with darker skin e.g. asians

Seborrhoeic dermatitis is more common in patients with which disease?

Parkinsons

Treatment for actinic keratoses?

Topical fluorouracil cream

Most common side effect of isotretinoin

Dry skin, eyes and lips are the most common side effects

How long does pityriasis rosea usualyl last?

Usually lasts 6-12 weeks

In pemphigus, the antibodies target which structure in the skin?

Target the desmosomes

In pemphigoid, what are the antibodies targeted against?

The basement membrane

Which medication can cause spider navii? hint you take it

Oral contraceptive pill

Presents with orange-red lesions with pinpoint redder spots on the glans and adjacent areas of skin in uncircumcised me

Zoon's balantitis

Treatment of guttate psoriasis

Reassurance and topical treatment if lesions are symptomatic

Difference between a lipoma and a soft tissue sarcoma?

Lipoma is usually <5cm | If bigger, worry about soft tissue sarcoma

Most common viral cause of erythema multiforme?

Herpes simplex

What can erythema marginatum occur after?

Rheumatic fever

Treatment of lichen planus

Topical corticosteroid e.g. clobetesone butyrate

Herald patch

Pityriasis rosea

Strawberry tongue and facial sparing

Scarlet fever

Starting on face and spreading to body | Koplik spots

Measles

Where are venous ulcers most commonly found?

Above the medial malleolus

Treatment of pityriasis rosea?

No treatment required | verisocolour is the one you treat with ketoconazole

First line topical treatment for acne?

Topical benzoyl peroxide

Significant complication of PUVA therapy?

Squamous cell skin cancer

Pemphigus or pemphigoid spares the mouth?

Bullous pemphigoid spares the mouth (bullous pemiphigAVOID)

A 34-year-old man with a history of polyarthralgia, back pain and diarrhoea is found to have a 3 cm red lesion on his shin which is starting to ulcerate. What is the most likely diagnosis?

Patient is likely to have ulcerative colitis - association with large joint arthritis, sacroilitis and pyoderma gangrenosum

Two important causes of erythema nodosum?

Tuberculosis and sarcoidosis - DO CHEST X-RAY

Common triggers of psoriasis?

Beta blockers | Lithium

A 61-year-old man presents with pruritus. He has had recurrent episodes of painful swelling in the MTP joints and a history of peptic ulcer disease. On examination he has a 'ruddy' complexion

Polycythemia

A 41-year-old woman requests a repeat prescription for citalopram. She also mentions she is constantly itchy and bruises easily. On examination she has reddened palms and a distended abdomen

Liver disease

"ruddy complexion"

polycythemia

What is polycythemia associated with?

Gout | Peptic ulcer disease

Chronic kidney disease

Lethargy & pallor Oedema & weight gain Hypertension

Treatment of bullous pemphigoid?

Oral corticosteroids

Usually has a herald patch

Pityriasis rosea

Waterlow score

Used to identify patients at risk of pressure sores

What is onchomycosis?

Another name for fungal nail

Treatment of lichen slcerosus

Steroids e.g. clobetasone propionate

You are working in general practice and see a 24-year-old male with a likely diagnosis of pityriasis rosea. What most commonly precedes this condition?

Viral infection

A lesion that may occur in a 32-year-old man with long standing Crohns disease.

Pyoderma gangrenosum

A 72-year-old man is investigated for weight loss. On examination he is deeply jaundiced and cachectic. He also has a dark velvety lesion coating his tongue.

Acanthosis nigricans

You are working in general practice and see a 17-year-old girl with a 8-day history of a lesion on her lower torso. This is a single 3cm oval plaque, pink in colour, with a scale trailing just inside the edge of the lesion. She has then had a subsequent 2-day history of generalised, non-pruritic, rash down her torso. This rash consists of lots of fine scales patches and plaques which follow the pattern of langer's lines. What is the most likely diagnosis?

Ptyriasis versicolour

You might see a positive Nikolsky sign in toxic epidermal necrolysis, what is this?

When the epidermis separates with mild lateral pressure

What is erythroderma

Any condition that causes the majority (>90% of the skin to become inflamed, erythematous and scaly) -most commonly: eczema, psoriasis, T-cell lymphoma, drug reactions and blistering reactions (pemphigus and pemphigoid)

This medication can cause a photosensitive reaction

Trimethoprim

Which medication would you avoid in glandular fever?

Amoxicillin!!!

Which virus accounts for 70% of erythema multiforme cases?

Herpes simplex virus

Who is dovobet contraindicated in?

Contraindicated in patients with calcium metabolism disorders and those who have viral skin lesions/fungal/bacterial/parasitic lesions

Which virus causes molluscum contagiosum?

Pox virus

Dry, fish-like scaling particularly affecting the extremities

Ichthyosis

Name a panniculitis

Erythema nodosum - inflammation of subcutaneous fat