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Actinic keratosis

Actinic keratosis

Derm

Derm

Vitiligo
Albinism
Acne vulgaris
Folliculitis
Rosacea
Hidradenitis suppurativa
Contact dermatitis
Atopic dermatitis
Lichen planus
Pityriasis rosea
Psoriasis
Seborrhoeic dermatitis
Urticaria
Actinic keratosis
Epidermolysis bullosa
Bullous pemphigoid
Pemphigus vulgaris
Erythema multiforme
Stevens-Johnson syndrome
Pressure ulcer
Sunburn
Burns
Frostbite
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
Measles virus
Rubella virus
Skin cancer
Alopecia areata
Onychomycosis

Key Takeaways

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.

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Flashcards

Actinic keratosis

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Questions

USMLE® Step 1 style questions USMLE

0 of 1 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:


Retrieved fromWikimedia Commons

Which of the following is the most likely diagnosis?