Diseases beginning with the alphabet S

Salmon patches
Scabies
Scars (go to keloids)
Scleroderma
Sebaceous hyperplasia
Sebaceous naevus (go to naevus sebaceum)
Seborrhoea
Seborrhoeic dermatitis or seborrhoeic eczema
Seborrhoeic keratoses
Senile lentigines (go to actinic lentigines)
Shingles (go to herpes zoster)
Skin cancers
Solar elastosis
Solar keratoses (go to actinic keratoses)
Squamous cell cancer
Steatocystoma multiplex
Strawberry haemangioma
Stretch marks (go to striae distensae)
Striae distensae
Sunburn
Sweet's disease
Sweaty palms/soles (go to hyperhidrosis)
Syringomas