脱毛

1. Origins, structure, and basic meaning

• Structure: 脱毛 is read as だつもう and is a noun and する verb with two meanings: hair loss and intentional hair removal.
• Basic usage: Natural loss appears in 急な脱毛, while intentional removal appears in 腕の脱毛; context distinguishes them.

2. Common pitfalls and similar expressions

• Two meanings
  • In medical or symptom contexts it means hair falling out, while in cosmetic or treatment contexts it means removing unwanted hair.
• Difference from 抜け毛
  • 抜け毛 commonly refers to shed hairs or everyday shedding, while 脱毛 describes a condition or the process of hair-removal treatment.