Actinic keratosis

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Actinic keratosis

Integumentary system

Pigmented skin disorders

Vitiligo

Albinism

Acneiform skin disorders

Acne vulgaris

Folliculitis

Rosacea

Hidradenitis suppurativa

Papulosquamous and inflammatory skin disorders

Contact dermatitis

Atopic dermatitis

Lichen planus

Pityriasis rosea

Psoriasis

Seborrhoeic dermatitis

Urticaria

Keratotic skin disorders

Actinic keratosis

Vesiculobullous skin disorders

Epidermolysis bullosa

Bullous pemphigoid

Pemphigus vulgaris

Desquamating skin disorders

Erythema multiforme

Stevens-Johnson syndrome

Skin integrity disorders

Pressure ulcer

Sunburn

Burns

Frostbite

Skin infections

Cellulitis

Erysipelas

Impetigo

Necrotizing fasciitis

Human papillomavirus

Varicella zoster virus

Poxvirus (Smallpox and Molluscum contagiosum)

Coxsackievirus

Herpes simplex virus

Candida

Malassezia (Tinea versicolor and Seborrhoeic dermatitis)

Pediculus humanus and Phthirus pubis (Lice)

Sarcoptes scabiei (Scabies)

Human herpesvirus 6 (Roseola)

Parvovirus B19

Varicella zoster virus

Measles virus

Rubella virus

Skin neoplasms

Vascular tumors

Human herpesvirus 8 (Kaposi sarcoma)

Angiosarcomas

Skin cancer

Hair and nail disorders

Alopecia areata

Telogen effluvium

Onychomycosis

Integumentary system pathology review

Pigmentation skin disorders: Pathology review

Acneiform skin disorders: Pathology review

Papulosquamous and inflammatory skin disorders: Pathology review

Vesiculobullous and desquamating skin disorders: Pathology review

Skin cancer: Pathology review

Bacterial and viral skin infections: Pathology review

Viral exanthems of childhood: Pathology review

Assessments

Actinic keratosis

Flashcards

0 / 10 complete

USMLE® Step 1 questions

0 / 1 complete

High Yield Notes

9 pages

Flashcards

Actinic keratosis

of complete

Questions

USMLE® Step 1 style questions USMLE

of complete

A 55-year-old man comes to the office for evaluation of scaliness and redness over his forehead for the past few months. It sometimes causes a stinging sensation on the affected area. Review of systems is noncontributory. He has been working as a lifeguard at the beach for the past 25 years. Past medical history is significant for type 2 diabetes mellitus that is well-controlled with metformin. Temperature is 37.0°C (98.6°F), pulse is 78/min, respirations are 16/min, and blood pressure is 126/75 mmHg. Physical examination reveals a sandpaper-like texture of the forehead on palpation. An image of the lesion is shown below:


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Which of the following is the most likely diagnosis?

External References

First Aid

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Actinic keratosis p. 495

associations of p. 730

squamous cell carcinoma p. 497

Plaques (skin) p. 487

actinic keratosis p. 496

Squamous cell carcinomas

actinic keratoses and p. 730

Summary

Actinic keratoses are a type of skin lesions that are caused by long-term exposure to the sun's UV radiation. They typically appear as irregular plaques or papules on parts of the skin areas exposed to the sun. Actinic keratoses are benign regions, but if left untreated, they can sometimes develop into skin cancer.

Elsevier

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