Scurvy

Scurvy or scorbutus is a deficiency disease resulting from a lack of vitamin C. Early symptoms of deficiency include weakness, fatigue, and sore arms and legs. Without treatment, decreased... Wikipedia

• Symptoms:  Weakness, feeling tired, changes to hair, sore arms and legs, gum disease, easy bleeding
• Causes:  Lack of vitamin C
• Risk factors:  Mental disorders, unusual eating habits, alcohol use disorder, substance use disorder, intestinal malabsorption, dialysis, voyages at sea (historic), being stuck adrift
• Diagnostic method:  Based on symptoms
• Treatment:  Vitamin C supplements, diet that contains fruit and vegetables (notably citrus)
• Data source:  DuckDuckGo