There are a variety of other less common types of hair loss.

These include:

• Telogen Effluvium - generalised hair loss all over the scalp resulting from severe physical or emotional shock. The loss happens at about 3 months after the incident and gradually regrows over the next 12 months.
  
• Anagen Effluvium - best known as a result of chemotherapy, this sudden loss of masses of hair can also happen in some forms of scalp surgery.
  
• Alopecia Areata - small patches of hair loss usually assocaited with anxiety. Can recur but most commonly disappears.
  
• Alopecia totalis - the loss of hair when Alopecia Areata becomes severe. Can be difficult to reverse.
  
• Burns and other accidental damage to scalp.
  
• Ringworm and other severe infections.
  
• Nervous tugging and handling of hair called Trichotillomania.
  
• Auto-immune diseases such as Lupus and Lichen planopilaris.
  
• Breakage due to improper care and cosmetics.
  
• Other very rare diseases.

And there is also less common hair loss in females due to pregnancy and/or the use of oral contraceptives. This is usually temporary.