Key legal question
Whether a guardianship based on mental weakness under Art. 369 ZGB is correct when the condition results from chronic alcohol abuse.
Extracted holding
If the mental disorder is a consequence rather than the cause of chronic alcohol abuse, Art. 369 ZGB is the wrong legal basis and the guardianship must be set aside.
Extracted reasoning
The decisive criterion is not the medical label alone but the legal ground for protection; alcoholism-related incapacity falls under the special provision for drunkenness in Art. 370 ZGB.