It could be a symptom of a health disorder and not just bingeing on some snack. Too much intake of salt is unhealthy and dangerous.
Causes:

• Dehydration
• Imbalance of electrolyte
• Addison’s disease
• Stress
• Pregnancy
• Premenstrual syndrome (PMS)
• Excessive sweating

Symptoms:

• Dry mouth
• Headache
• Nausea
• Vomiting
• Sweating
• Mood swings
• Extreme thirst