Answer:
Deficiency disease-abnormal conditions due to the absence of specific substances usually found in a normal diet.
Vitamin B1 deficiency-fatigue, depression, irritability, low blood pressure, loss of appetite.
Vitamin A deficiency-susceptible to infection, partial or complete blindness, unhealthy skin.
Vitamin D deficiency-bones not normally hardened and become bent or twisted
Niacin (B3) deficiency-inflammation of the mouth, sores around the mouth, red and thickened skin, diarrhea, vomiting, etc.
Vitamin C deficiency-weakness, bleeding into tissues, excessive bruising, softening of bones
Brainliest please :)
