1. Seborrheic Dermatitis
Slide #8, "0208-Seborrheic dermatitis" from Set #2
Disease: Seborrheic dermatitis
Age: Unknown
Notes:
Seborrheic dermatitis of scalp. The lesions are red and covered with greasy scales. This patient reported intense itching, which is common in the scalp.

2. Atopic Dermatitis Slide #19, "0219-Atopic Dermatitis" from Set #2
Disease: Atopic Dermatitis
Age: Adult (18-60)
Notes:
Atopic dermatitis presenting as chronic relapsing dermatitis of the dorsum of both hands in a 39-year-old woman with a family history of atopic dermatitis and allergic rhinitis.

3. Herpes Simplex Slide #48, "0248-Herpes simplex" from Set #2
Disease: Herpes simplex
Age: Child
Notes:
Around the mouth of this 8-year-old boy are small grouped vesicles. The lesions were preceded by itching and burning a few hours before the eruption.

4. Ecthyma Slide #43, "0243-Ecthyma" from Set #2 Disease: Ecthyma
Age: Adolescent/Young Adult (11-18)
Notes:
On the arm of this 12-year-old girl are evident small bullae and pustules on an erythematous base surmounted by a hard crust. Streptococcus pyogenes was identified as the etiologic agent.

5. Alopecia Areata Slide #31, "0231-Alopecia areata" from Set #2
Disease: Alopecia areata
Age: Child
Notes:
In this 5-year-old child, an area of alopecia of the vertex is surrounded by normal hair. No inflammation or desquamation is evident on the affected skin.

6. Acanthosis Nigricans Slide #5, "0105-Acanthosis nigricans" from Set #1
Disease: Acanthosis nigricans
Age: Adolescent/Young Adult (11-18)
Notes:
11-year-old AAF presents with hyperpigmented velvet-like skin changes on her neck. Patient appears precocious with enlarged breasts, obesity, extensive acne vulgaris, and increased hair growth on the upper lip. Systemic disease: HAIR-AN Syndrome (Hyperandrogenicity, insulin-resistance and acanthosis nigricans).

7. Scleroderma Slide #25, "0125-Scleroderma" from Set #1
Disease: Scleroderma
Age: Elderly Appearing Adult
Notes:
65-year-old WM with long standing Raynaud's phenomenon presents with telangiectatic mats on his face and hands, perioral skin tightening and gastroesophagel reflux. Laboratory testing for anti-centromere antibody was positive. Systemic disease: Limited systemic sclerosis.

8. Tumoral Calcinosis Slide #14, "0114-Tumoral calcinosis" from Set #1
Disease: Tumoral calcinosis
Age: Adult (18-60)
Notes:
45-year-old white female with hard subcutaneous growths. The lesions associated with a joint limit its mobility. Her sister has a similar problem. Laboratory testing revealed hyperphosphatemia. Systemic disease: Inherited abnormality of phosphate metabolism.

9. Giant Congenital Nevus
Slide #7, "0407-Giant nevocytic nevus" from Set #4
Class: Cutaneous Neoplasms
Disease: Benign Melanocytic Proliferations
Age: Adult (18-60)
Race: Caucasian
Image Type: Clinical Photograph

10. Histiocytic Lymphoma
Slide #46, "0446-Histiocytic lymphoma" from Set #4
Class: Cutaneous Neoplasms
Disease: Malignant Lymphoreticular/Hematologic/Neuroendocrine Neoplasms
Age: Adult (18-60)
Race: Caucasian
Image Type: Clinical Photograph

11. Keratoacanthoma
Slide #43, "0443-Keratoacanthoma on damaged skin" from Set #4
Class: Cutaneous Neoplasms
Disease: Malignant Epithelial Neoplasms
Age: Elderly Appearing Adult
Race: Caucasian
Image Type: Clinical Photograph

12. Trichoepitheliomas Slide #13, "0413-Trichoepitheliomas" from Set #4
Class: Cutaneous Neoplasms
Disease: Benign Cutaneous Appendageal Proliferations
Age: Adult (18-60)
Race: Caucasian
Image Type: Clinical Photograph

13. Adenoma Sebaceum Slide #15, "0415-Adenoma Sebaceum" from Set #4
Class: Miscellaneous Disorders and Other Topics
Class 2: Cutaneous Neoplasms
Disease: Heritable/Congenital Disorders and Miscellaneous Syndromes
Disease 2: Benign Bony and Soft Tissue Proliferations
Age: Adolescent/Young Adult (11-18)
Race: Caucasian
Image Type: Clinical Photograph

14. Acute Paronychia Slide #13, "1513-Acute Paronychia" from Set #15
Class: Miscellaneous Disorders and Other Topics
Class 2: Infections Infestations and Environmental Factors
Disease: Appendageal Disorders
Disease 2: Bacterial Mycobacterial and Spirochetal Infection
Age: Unknown
Race: Caucasian
Image Type: Clinical Photograph

15. Median Canal Dystrophy
Slide #1, "1501-Median Canal Dystrophy Habit Tic" from Set #15
Class: Miscellaneous Disorders and Other Topics
Disease: Appendageal Disorders
Disease 2: Neuropsychiatric Cutaneous Disorders
Age: Adult (18-60)
Race: Caucasian
Image Type: Clinical Photograph

16. Impetigo Slide #2, "1202-Impetigo" from Set #12
Class: Infections Infestations and Environmental Factors
Disease: Bacterial Mycobacterial and Spirochetal Infections
Age: Child
Race: Caucasian
Image Type: Clinical Photograph

17. Lichen Planus Slide #14, "0214-Lichen planus" from Set #2
Disease: Lichen planus
Age: Adult (18-60)
Notes:
Lichen planus involving the buccal mucosa with whitish reticulum in a 30-year-old man affected by chronic active hepatitis C.

18. Myxoid Cyst Slide #47, "1247-Myxoid Cyst" from Set #12
Class: Cutaneous Neoplasms
Disease: Benign Bony and Soft Tissue Proliferations
Age: Adult (18-60)
Race: Caucasian
Image Type: Clinical Photograph

19. Cutaneous Horn
Cutaneous horn

20. Dystrophic Epidermolysis Bullosa
Slide #43, "1243-Dystrophic Epidermolysis Bullosa" from Set #12
Class: Inflammatory and Metabolic Disorders
Class 2: Miscellaneous Disorders and Other Topics
Disease: Blistering Disorders
Disease 2: Heritable/Congenital Disorders and Miscellaneous S
Age: Unknown
Race: Caucasian
Image Type: Clinical Photograph