Poor Memory: Clinical Meaning

Depression

Depression is a common and serious mood disorder causing persistent feelings of sadness, hopelessness, and loss of interest in activities. It affects how a person thinks, feels, and handles daily activities. Effective treatments include therapy and medication.

Parkinson's Disease

Parkinson's disease is a progressive neurological disorder affecting movement, caused by the loss of dopamine-producing neurons. Symptoms include tremor, rigidity, slowness of movement, and balance problems. There is no cure, but treatments can manage symptoms.

Alzheimer's Disease

Alzheimer's disease is the most common cause of dementia — a progressive neurological disorder that destroys memory and other cognitive functions. It typically begins with mild memory loss and progresses to severe cognitive impairment.

Vitamin D Deficiency

Vitamin D deficiency impairs calcium absorption and bone mineralization, causing bone pain, muscle weakness, fatigue, and increased fracture risk. It is extremely common globally due to limited sun exposure and dietary insufficiency.

Bipolar Disorder

Bipolar disorder involves episodes of mania (elevated mood, decreased need for sleep, impulsivity) alternating with depression. It affects approximately 2.4% of the global population; mood stabilizers (lithium, valproate) are the primary pharmacological treatment.

Vitamin B12 Deficiency

Vitamin B12 deficiency is essential for nerve function, red blood cell formation, and DNA synthesis. Particularly common in older adults, vegetarians, and those with GI disorders.

Vitamin C Deficiency (Scurvy)

Vitamin C deficiency in its severe form causes scurvy. Subclinical deficiency affecting immune function and wound healing is more common in developed countries.

Zinc Deficiency

Zinc deficiency affects approximately 2 billion people worldwide, impacting immunity, wound healing, protein synthesis, and taste and smell.