Skin lesions are classified into 3 major types. They are:

1. Primary lesions
2. Secondary lesions
3. Special lesions

The primary skin lesions are:

1. Macule
2. Patch
3. Papule
4. Plaque
5. Nodule
6. Vesicle
7. Bullae
8. Pustule
9. Wheal
10. Cyst

The secondary skin lesion are:

1. Scale
2. Crust
3. Excoriation
4. Erosion
5. Ulcer
6. Fissure
7. Lichenification
8. Induration
9. Sclerosis
10. Atrophy

The special skin lesions are:

1. Burrow
2. Comedone
3. Telangectasia
4. Poikiloderma
5. Milium
6. Target lesions
7. Alopecia

1. Premalignant lesions of oral cavity
2. Verruga peruana
3. Trabecular pattern of proximal femur
4. Types of drowning