DEPRESSION IN DOWNS: AN EPIDEMIOLOGICAL  AND CLINICAL INVESTIGATION ON 510 PATIENTS 

Renato COCCHI, neurologist and medical psychologist

 Traduzione italiana)

Summary.

The clinical records of Ss, who had specific antidepressant therapies added  to usual  drug therapies, were retrieved from a consecutive not selected  series  of clinical records on 510 home reared Down's syndrome individuals.

The  records of 45 Ss (17 M + 28 F; average ages: M = 15 yrs; F = 12 yrs)  were reexamined  because of  the onset  of clearly depressive symptoms  (depressed  mood, low  self-esteem, irritability, reduced play or social interest, reduced use  of language,  aggression  or auto-aggression, etc.) non controlled  by  drugs  like glutamine,  carbamazepine,  S-adenosil-l-methionine,  5-hydroxytriptophan,  which possess  some  antidepressant activities, which were  usually  prescribed  to those Down Ss.

The  M/F ratio of these 45 Ss was found inverted in comparison with the  normal male prevalence among Down Ss, and an anticipation of age of the onset of depression was observed in females.

The specific antidepressant drugs used, were viloxazine, as the first choice drug in 38   Ss,  amitryptiline  (6  Ss),  fluoxetine  (2  Ss),  clomipramine  (2   Ss), nortryptiline  (2 Ss) and imipramine (1 S). Six cases, 5 treated  by  viloxazine and 1 by fluoxetine, had these drugs substituted by another antidepressant.

 

Key  words:  Down's  syndrome; depression;  epidemiology;  gender  prevalence; symptoms; drug therapy.

 

Stress and depression

Down’s syndrome

Mental retardation

Drug  modulation of stress reaction

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 Surely clinicians have paid attention to coming out of depression and to its diagnosis in individuals with mental retardation. If we consider the language and communication deficits in this group, their lack of social skills and  socialisation, it becomes obvious that all the marks of loneliness are present. So the mentally retarded, without any doubt has the risk of developing mood troubles (Wells and Duncan 1980, Matson, 1982; Schloss 1982; Menolascino, 1990).

 After study decades, we just have scarce doubts that mentally retarded are can have and in facts suffer from affective troubles. That so,  even if we must ask ourselves if they show all the range of mood troubles found in the general population (Fleisher and Weiler, 1990).

According to Dosen, 1990, depression in children with mental retardation has the same nurobiological and psychological base of depression in normal children.  The illness can come out independently from sex, age and IQ, even if age and IQ can influence its appearance, or these can modify it.

 Since the end of the years 70 I was involved in depression in mentally retarded people, either from a therapeutic point of view (Cocchi and Occhialini, 1981 and 1982) and drug therapy in the  Down syndrome of Down. So. On one hand I became very sensitive to this problem, and on the other I could collect a large own and usable casuistry for specific investigations.

 

Materials and methods.

I reexamined the clinical reports belonging to 510 Down subjects raised in their families, coming from all Italian regions and being a consecutive non selected series of patients  visited from the January 1979 and March 31, 1994.

 From these reports I excluded those belonging to subjects with autism (DSM-III, R: 290.00).

 Among the remaining ones I selected the clinical reports of the subjects in whom I  prescribed a tricyclic or an atypical antidepressant drug. Even if they own some antidepressant actions, I did not consider therapies made by  glutamine, or S-adenosil-l-methionine, or 5-hydroxytriptophan, or carbamazepine or more than one of these drugs contemporarily prescribed.

From the case reports so selected, then I collected:

 - sex;

 - chromosomal diagnoses;

 - age at the first consultation (in months);

 - age (always in months) of the appearance of the symptoms that forced me to prescribe of a specific antidepressant drug;

 - meaningful symptoms;

 - current therapy when the depression had its diagnosis;

 - antidepressants used with their daily doses.

Collected data had descriptive statistical elaboration and analysed with the Chi Square test, whenever possible.

 

Results.

 Following the above defined criteria I found out 45 records that are 8.82% of the whole series.

 The sex distribution was: 17 M + 28 F with M/F ratio 100/165.

 I summarized these results in the tables no. 1-9.

 

Table 1: Distribution of chromosomal diagnoses.

 

Chromosomal anomaly

 M

%

F

%

Total

%

Standard Trisomy 21

13

76.48

25

89.29

38

84.44

Translocations

0

0.00

2

3.57

1

2.22

Mosaicisms

2

11.76

1

3.57

3

6.67

Not known

2

11.76

1

3.57

3

6.67

Totals

17

100.00

28

100.00

45

100.00

Chi Square = 1.268 with 3 df; p = 1.00.  

 

 

 Table2:  Average age, in months, as divided by gender.

 

Age

M

F

Average

138.24

87.50

SD

108.58

55.52

minimum

23

5

maximum

474

231

  

The showy difference of the age at first consultation is surely casual and due to a large extent from the presence of range limits, mainly maximums, very different, by having a larger weight in the average calculation.

 

 

 Table 3: Average gender age (in months) when

 the antidepressant drug was prescribed.

 

             Age

M

F

Average

187.65

140.48

SD

89.11

35.54

Minimum

103

65

Maximum

474

231

 

 

    In spite of the bias made by a male subject nearly 40 years old, I dare strongly suggest that Down females had reduced  ages when the depressive picture became evident.

 

 

 Table 4: Depressive symptoms not controlled by the current therapy

 

Symptom

M

F

 

Ss nr.

%

Ss nr.

%

Sadness

10

58.82

18

66.67

Poor playing and social interest

8

47.06

13

48.15

Irritability

8

47.06

8

29.63

Low self-esteem

7

41.18

8

29.63

Aggression

6

35.29

3

11.11

Reduced use of the speech

6

35.29

8

29.63

Crying without any reason

0

0.00

6

22.22

Crying after frustration

4

23.53

3

11.11

Spitefulness

4

23.53

0

0.00

React. Depres. (by his father’s death)

1

5.88

0

0.00

Bedwetting

1

5.88

4

14.81

Brothers’ or sisters’ jealousy

0

0.00

3

11.11

Eyelash and/or hair pulling

0

0.00

2

7.41

    Chi Square (only for the 8 common symptoms): 4.898, with 7 df,  p = 0.732 N.S.

 

 There is not any significant difference on the presence of 8 common symptoms. Of the five uncommon ones, two pertain only to males (spitefulness and reactive depression) and the three others only to females (weeping without any apparent cause, jealousy, eyelash and/or hair pulling).

 

 

  Table 5: Drugs prescribed in males before adding the antidepressant drug.

 

 Prescribed drug

Mg/die (*)

Ss nr.

%

S-adenosil-L-methionine

100

11

64.71

Folates

7.5

11

64.71

Carbamazepine

100-200

9

52.94

Diazepam

1-2.5

8

47.06

Pyridoxina

150

8

47.06

Pyritinol

50-100

6

35.29

Bromazepam

0.5-1.5

5

29.41

Vit.s  B1+B6+B12

125+125+mcg500

5

29.41

l-glutamine + pemoline

45+5 – 90+10

5

29.41

l-glutammne

125-250

3

17.65

Delorazepam

0.5

2

11.76

A polyvitaminic drug  (Berocca TM)

 

2

11.76

Alpha-tocopherol