Pallor is a pale skin color caused by reduced oxyhemoglobin levels. It can be caused by anemia, leukemia, heart disease, shock, endocrine disorders, and more. Anemia itself is a reduction in red blood cells, hemoglobin, or red blood cell volume. The most common type is iron deficiency anemia from inadequate iron intake or absorption. Other types include megaloblastic anemia from B12 or folate deficiency, hemolytic anemia from red blood cell membrane issues or immune/non-immune causes, aplastic anemia from bone marrow failure, and anemia of chronic disease seen in infections, inflammation, or cancers.

1. Done by :
Dr. Nawras

2. PALLOR
 pallor is a pale color of the skin and mucous membrane
due to reduce in amount of oxyhemoglobin
 there are many causes of pallor :
- Anemia : which is the most common cause
-Leukemia
-Heart disease
-Sleep deprivation
- Shock : whether it is septic , Anaphylactic, Cardiogenic,
Neurogenic and hypovolemic shock
- syncope =decrease in the blood supply to the
brain=hypotension leading to pallor
.

3. PALLOR
-Also in case of endocrine defect including:
1. long steady diabetic patient lead to keratin
deposition in the skin
2. Hypothyroidism with or without anemia
3. hypopituitarism leads to decrease in the
melanin stimulatory hormone
 Pallor is seen in :
* Palm creases
* Conjunctiva.
* And mucous membranes

4. ANEMIA
is a reduction in the number of RBCs, the quantity of
hemoglobin, or the volume of RBCs
Hb level below than 10 g/dl is considered as a significant level
to assess anemia
 Because the main function of RBCs is oxygenation, anemia
results in varying degrees of hypoxia depending on the degree of
anemia and the rapidity of development but its independent on
the cause.
 symptom of anemia : like fatigue ,headache ,dizziness
Palpitation , dimness of vision and others
 signs : the most important is pallor and others like :
Tachycardia, cardiac dilation, edema and murmurs

5. physical finding of ANEMIA
Severe Pallor

6. Koilonychia

7. Smooth shiny tongue

8. Types of ANEMIA
Anemia
Iron def.
anemia
Megaloplasti
c anemia
Hemolyti
c anemia
aplastic
anemia
Anemia of
chronic dis.

9. Iron Deficiency ANEMIA
The most common type
Etiology
1. Inadequate dietary intake
Found in 30% of the
world’s population
2. Malabsorption
Absorbed in duodenum
GI surgery
3. Blood loss
2 ml blood contain 1mg
iron
GI, GU losses

10. Investigation
Blood film : Hemoglobin level reduced, mean
corpuscular volume reduced ,blood film:
hypochromic microcytic,poikilocytosis
bone marrow aspiration : iron stores is empty
plasma iron
 serum ferritin reduced and the total binding
capacity increased.
gastrointestinal tract endoscopy.
patients with intravascular red cell destruction
should have urine test for hemosiderin
Lack of iron in
bone marrow aspirate
normal

11. Megaloblastic Anemia
 The causes of this type of anemia is deficiency of both B12
and folic acid that are important for D synthesis .
 Any disorder in the DNA will cause abnormalities in rapidly
proliferative tissue including the hematopoietic tissue.
 Diagnosis :
- Hb , mcv
-blood film :oval macrocytosis ,poikilocytosis
-and hypersegmented neutrophil.
- Platlet count and leucocyte tend to be low.
-bone marrow show hypercellularity,megaloblastic changes in
erythroid series.
- plasma LDH elevated due to increase in the destruction of RBC

12. Megaloblastic Anemia
 Common forms of megaloblastic anemia is :
1. Cobalamin deficiency ( vitamin B12) known as
pernicious anemia
-Inadequate diet ,intrinsic factor deficiency (congenital or
due to gastoctomy
-disease of the terminal ileum(e.g. Crohn’s disease),
- may be removed from gut by bacterial proliferation and
arasite
2. folate deficiency
- Poor intake
- malabsorption(Coeliac disease)
- increase demand(pregnancy)or drugs.

13. Hemolytic Anemia
o Various abnormalities lead to decrease in the life span of
the RBC & development of anemia when the marrow output
no longer compensates
o increasing in BM actiivity will be reflected as increasing in
reticulocye count in periphral blood
othe catabolic pathways for heamoglobin degredation are
overloaded and a modest increase in unconjucated
bilirubine in the blood and increase absorption urobilinogen
from the gut that excreted in urine
othere is no colour change in urine sine it is color less also
jaundice may developed .

14. Hemolytic Anemia
CAUSES OF HEMOLYTIC ANEMIA
* CONGENITAL
* AQUIRED
-membrane abnormalities : hereditory spherocytosis Or
elliptocytosis
-hemoglobinopathies: in lack of Hb chain synthesis
(thalassemia) or in amino acid substitution or alternation of
Hb chain like in sickle cell anemia
- membrane defect : G6PD def.
- IMMUNE : Autoimmune disease like SLA
- NON IMMUNE : like : burn , artificial cardiac valve , infections ,
malaria , drugs , dyserthropoietic like in paroxysmal nocturnal
hemoglobinuria

15. Aplastic Anemia
 the basic problm in this type of anemia is failure of stem cell to
avarying dgree, producing hypoplasia of marrow elements
 Etiology :
*Congenital:Chromosomal alterations
*Acquired :Results from exposure to ionizing radiation,
chemical agents, viral and bacterial infections
 investigation :
-A full blood count demonstrate a pancytopenia, neutropenia is
the most marked aspect of leukopenia , RBCs are normocytic –
normochromic , platelet production is severely affected
- bone marrow aspiration should be done for assessment of
cellularity

16. Anemia of chronic disease
 This is a commen type of anemia ,especially in hospital
papulation characterized by :
- Anemia occurs in he setting of chronic infection ,
inflammation , or neoplasia
- Anemia is not related o bleeding , hemolysis or marrow
infiltration
- Anemia is mild , with normal MCV and normocytic –
noromchromic RBC
- the serum iron is low but iron stors is normal or increased

17. Anemia of chronic disease
* Correlates with non specific symptoms of CRF
*several mechanism are implicated including:
- Relative deficiency of erythropoietin
- diminished erythropoiesis due to toxic effect of uremia on marrow
precursor cell.
- reduce red cell survival.
- increased blood loss due to capillary fragility and poor platelet
formation.
- reduced dietary intake and absorption of iron.
Example is anemia due to chronic renal failure :