Acne.
2. Atopic dermatitis (better known as eczema).
3. Psoriasis.
4. Rosacea, particularly among patients with fair skin.
5. Herpes zoster (commonly called shingles).
6. Skin cancer.
7. Warts.
8. Urticaria (also known as hives).
9. Fungal infections, such as athlete’s foot and nail fungus.
10. Exposure to poison ivy, poison oak, and poison sumac.