Primary Skin Lesions

Bulla - Vesicle with diameter greater than 1 cm

Cyst - Elevated, palpable area containing liquid or viscous matter

Macule - Flat spot, colour varies from white to brown or from red to purple, diameter less than 1 cm

Nodule - Elevated firm spot, diameter 1-2 cm

Papule - Elevated firm spot, colour varies from brown to red or from pink to purplish red, diameter less than 1 cm

Patch - Irregular flat macule, diameter greater than 1 cm

Plaque - Superficial papule, diameter greater than 1 cm, rough texture

Pustule - Elevated area, diameter less than 1 cm, contains purulent fluid

Telangiectasia - Red, thread-like line

Tumour- Elevated solid, diameter greater than 2 cm, may be same colour as skin

Vesicle - Elevated area, diameter less than 1 cm, contains serous fluid

Wheal - Pink, irregular spot varying in size and shape