Basically, yes. Here's the extract from the JSP that Ninja mentioned. I've found it for you as you obviously can't be arsed.
4. Atopic dermatitis. Conditions diagnosed as eczema should also be included in this category. A history of atopic dermatitis is considered to increase the likelihood of irritant contact dermatitis on exposure to irritants (such as oils, greases, detergents) but usually only if the condition was severe in childhood and particularly if it involved the hands118. Candidates with a history of atopic dermatitis within the last 3 years should normally be graded P8119. For candidates who have been symptom free for over 3 years, the presence of the following risk factors should be considered:
a. Functional impairment120.
b. Dermatitis of the hand(s).
c. Secondary care involvement121.
If none of the above factors are present, the candidate may be graded P2. If any of the above is present, the candidate should be referred to the single-Service Consultant Occupational Physician responsible for recruit selection for more detailed consideration.
If you don't disclose your eczema, the Navy will find out and sack you.
Just to add, of the 120 people medically discharged from HMS Raleigh last year, about 52% of them arrived with undisclosed pre-existing medical issues. Technically, they could've all been prosecuted for fraud as well as effectively being sacked.
When one considers it costs about £7 or £8k to get an applicant as far as Raleigh, wasting nigh on half a million quid a year on fraudsters tends to draw little by way of sympathy.
Ultimately, the only person able to give definitive advice in this area is the medical examiner once he/she has sighted your medical records relating to the issue.
As stated, if the eczema is apparent at the medical, after joining or you have received precribed medication for eczema in the last three years then the odds are unfortunately not in your favour. Good luck, nonetheless.
Think my dream is over as stated before I have its all over my arms and hands (skin Flaking) using cream provided me by the doctor 2 weeks ago so it's on my medical records it has also spread to my chest and arms. The medical offI certainly gonna notice the scares etc even if it had cleared up